CN109289133B

CN109289133B - One-piece strap construction for mask

Info

Publication number: CN109289133B
Application number: CN201710607185.6A
Authority: CN
Inventors: 周炜敏; 屈铁成; 徐畅; 白溪
Original assignee: Honeywell International Inc
Current assignee: Omsignal Inc
Priority date: 2017-07-24
Filing date: 2017-07-24
Publication date: 2021-10-08
Anticipated expiration: 2037-07-24
Also published as: CN109289133A

Abstract

Embodiments generally relate to face masks, such as filtering masks or respirator masks, having an integral strap construction. Embodiments typically include two straps, each strap including an ear strap portion and a head strap extension. In general, the ear strap portion may include upper and lower straps configured to interact with a user's ears, and the headgear extension portion may be configured to interact with a portion of the user's head and may include attachments. The attachments may include female and male attachments and may be removable to allow adjustment of the mask fit based on user preference.

Description

Unitary strap construction for a mask

Cross Reference to Related Applications

Not applicable.

Statement regarding federally sponsored research or development

Not applicable.

Reference to the filmlet appendix

Not applicable.

Technical Field

Embodiments relate generally to masks in which a strap interacts with the ear, head, and/or neck of a user, such as for a filter or respiratory mask.

Drawings

For a more complete understanding of this disclosure, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description, wherein like reference numerals represent like parts.

FIG. 1A illustrates a perspective view of an exemplary embodiment of a face mask that includes top and bottom left straps that attach to a user's head;

FIG. 1B illustrates a side view of an exemplary embodiment of a mask comprising a top right side strap and a bottom right side strap attached to a user's head;

fig. 1C illustrates a rear view of an exemplary embodiment of a mask attached to a user's head via an attachment;

FIG. 2 illustrates a top view of an exemplary embodiment of a mask that includes a left side strap, a right side strap, an attachment, a plurality of cuts, and two openings;

FIG. 3A illustrates a bottom view of an exemplary embodiment of a right side strap that includes an opening and a first portion of a female attachment member;

FIG. 3B illustrates a top view of an exemplary embodiment of a right side strap including an opening and a second portion of a female attachment member;

FIG. 4A illustrates a bottom view of an exemplary embodiment of a left side strap comprising an opening and a plurality of slits;

FIG. 4B illustrates a top view of an exemplary embodiment of a left side strap comprising an opening, a plurality of slits, and a male attachment member;

FIG. 5A illustrates a top view of an exemplary embodiment of a male attachment member attached to a left strap;

fig. 5B illustrates a side view of an exemplary embodiment of a male attachment member comprising a first portion of the male attachment member and a second portion of the male attachment member;

fig. 6A illustrates a top view of an exemplary embodiment of a first portion of a male attachment member comprising grooves and ridges;

FIG. 6B illustrates a bottom view of an exemplary embodiment of a first portion of a male attachment member comprising a protrusion;

fig. 7A illustrates a top view of an exemplary embodiment of a second portion of a male attachment member comprising a raised surface;

FIG. 7B illustrates a bottom view of an exemplary embodiment of a second portion of a male attachment member comprising an aperture and a plurality of retaining members;

FIG. 8A illustrates a bottom view of an exemplary embodiment of a first portion of a female attachment member comprising a cavity and a plurality of connecting elements;

fig. 8B illustrates a top view of an exemplary embodiment of a second portion of a female attachment member; and

fig. 8C illustrates a side view of an exemplary embodiment of a female attachment member comprising a first portion of the female attachment member and a second portion of the female attachment member.

Detailed Description

It should be understood at the outset that although illustrative implementations of one or more embodiments are illustrated below, the disclosed systems and methods may be implemented using any number of techniques, whether currently known or yet to be known. The present disclosure should not be limited in any way by the illustrated embodiments, drawings, and techniques illustrated below, but may be modified within the scope of the appended claims along with their full scope of equivalents.

The following brief definitions of terms may be applied throughout the application:

the term "comprising" means including but not limited to, and should be interpreted in the manner in which it is commonly used in patent text;

the terms "in one embodiment," "according to one embodiment," and the like generally mean that a particular feature, structure, or characteristic described in connection with the term can be included in at least one embodiment of the invention, and can be included in more than one embodiment of the invention (importantly, such term does not necessarily refer to the same embodiment);

if the specification describes something as "exemplary" or "an example," it should be understood that it refers to non-exclusive examples;

the terms "about" or "approximately" and the like, when used with a number, may mean the particular number or, alternatively, a range near the particular number, as would be understood by one of skill in the art (e.g., +/-10%); and is

If the specification states a component or feature "may", "can", "should", "about", "preferably", "possibly", "generally", "optionally", "for example", "often", or "may" (or other such language) be included or have a property, that particular component or feature need not be included or have that property. Such a component or feature may optionally be included in some embodiments, or it may not be included.

Embodiments of the present disclosure generally relate to face masks including straps configured to interact with the ear, head, and/or neck of a user, such as for use in a filter mask, respiratory mask, or powered dust cover (e.g., to prevent exposure to fine particulates, e.g., PM)_2.5). Conventionally, a mask may be configured to be attached to the user's head via straps in only a single way. For example, some masks may be attached using ear straps, while othersThe mask may use a neck strap or a head strap. Due to varying levels of user comfort, conventional ear band configurations can result in tension on the ears of some users, making it difficult to wear for extended periods of time. On the other hand, for some users, the neck strap configuration may cause fitting problems, wherein the mask may not adhere tightly to the user's face. In addition, the headband configuration may lead to stability problems, wherein the mask may not be affixed to the user's head for extended periods of time (e.g., for the duration that the user intends to use the mask). Thus, the disclosed embodiments may allow a single mask to be configured to interact with both the user's head and the user's ears. In this way, the mask may provide more stability and comfort to the user for a longer period of time. Additionally, the disclosed embodiments may include attachments that allow the strap to be easily and reliably attached to the head of a user. Accordingly, embodiments of the present invention may address one or more of these issues in an attempt to increase user comfort and extended wear of the mask.

The disclosed embodiments relate to strap systems for a mask (e.g., a filter mask, a respiratory mask, and/or a powered dust cover), for example, which may be configured to interact with the user's ears and head (in order to hold the mask on the user's face for respiratory filtration). In general, the disclosed embodiments may include a strap system that includes two straps, each generally including two portions: an ear band portion and a headband extension portion. Thus, in general, there may be a right side ear band portion and a left side ear band portion, each comprising an upper ear band portion and a lower ear band portion. Thus, in general, the right and left ear band portions can each include an opening positioned/located between the upper and lower ear band portions. Additionally, there may be a left headband extension and a right headband extension. For example, a left side headband extension can extend outward (away from a distal end of the ear band portion) and can be formed when the left upper ear band portion is joined with the left lower ear band portion (e.g., in some embodiments, a headband extension that extends outward from an area adjacent to an opening of the upper and lower ear band portions). For example, the right headband extension can extend outward (away from the distal end of the ear band portion) and can be formed when the right superior ear band portion is joined with the right inferior ear band portion. In general, the angle between the headband extension and the ear band portion can be about 120 degrees. In some embodiments, the angle between the headband extension and the ear band portion can vary between 100 and 150 degrees. The angle between the headband extension and the ear band portion reduces pressure on the user's ear. Typically, the ear straps and the headband of each side (e.g., each strap) are formed as a single, unified whole (e.g., as a single element without the attachment and use of separate elements), e.g., of the same material and/or molded as a single, unitary element. Typically, one of the headband extensions may include a plurality of cuts across the length of the headband extension. In some embodiments, such a headband extension may include a male attachment member positioned at the free/distal end of the left headband extension (although in some embodiments, the position of the male attachment member may be adjusted along the length of the headband extension). Typically, the other (second) headband extension may comprise a female attachment piece positioned at the free/distal end of the headband extension. In general, the female attachment member of the second headband extension may be configured to interact with the male attachment member of the first headband extension.

In some embodiments, the positions of the male and female attachments may be swapped. In other words, the male attachment member may be positioned on the right headband extension and the female attachment member may be positioned on the left headband extension. In some embodiments, a plurality of cut-outs may be positioned on the right headband extension and may be configured to interact with one of the male attachment member or the female attachment member. In some embodiments, a plurality of cut-outs may be positioned on the left headband extension and may be configured to interact with one of the male attachment member or the female attachment member. In some embodiments, the plurality of cuts may range from about 8-12 centimeters. In some embodiments, the plurality of cuts may range from about 5-15 centimeters.

In some embodiments, the left and right side straps may include attachment points (e.g., configured for attachment to an associated hood) at the first end of the example strap. Each of the left and right side straps may interact with the mask at attachment points to connect the left and right side straps to the mask. In some embodiments, the left side strap may include two attachment points. The first attachment point may be positioned on the left side of the upper half of the mask and the second attachment point may be positioned on the left side of the lower half of the mask. Similarly, in some embodiments, the right side strap may include two attachment points. The third attachment point may be positioned on the right side of the upper half of the mask and the fourth attachment point may be positioned on the right side of the lower half of the mask. In general, the number of attachment points on the left and right sides of the mask may be equal and may vary from one attachment point to up to six attachment points on each side.

Generally, the left and right side straps may be attached equidistant from the top of the mask (and thus, they may be directly opposite each other across the vertical centerline of the mask). Additionally, the left and right side straps may be attached to the attachment points using different connection types, such as clips, snaps, and the like. For example, the left and right side straps may be pivotally (e.g., rotatably) attached to the mask. For example, the left and right straps may be permanently attached to the mask (e.g., by bonding the material of the left and right straps to the mask using heat or a mechanical attachment feature such as a clip). In this context, "permanently" may mean that the left and right side straps may be attached to the mask to prevent easy removal of the left and right side straps from the mask. The user may use force or heat or any other means (e.g., cutting) to separate the left and right side straps from the mask depending on the material, but, in general, this will damage the mask and may not achieve the purpose of the mask. In other embodiments, the strap may be removable (allowing removal and replacement of the strap/cover) at the attachment point.

In some embodiments, the left side strap and the right side strap may each include an ergonomic (inner surface) portion. Typically, the ergonomic portion may be positioned adjacent the mask and may extend between the attachment point and the opening in the ear band portion (although in other embodiments, the ergonomic portion may extend to include some or all of the ear band portion around the opening). For example, in some embodiments, an ergonomic portion may be included on a portion of the band configured to contact a user's cheek. In some embodiments, the ergonomic portion may include a plurality of ridges positioned on an outer surface of the associated band. The plurality of ridges may flex outwardly away from the mask and may allow the left and right side straps to maintain their shape (more specifically, the flex pattern of the plurality of ridges may prevent the left upper, lower, upper right and lower side straps from being too stiff, resulting in an uncomfortable fit for the user; in other words, the flex pattern of the plurality of ridges may increase the comfort of the user by increasing the flexibility of the left upper, lower, upper right and lower side straps). In some embodiments, the plurality of ridges may include varying patterns (e.g., vertical ridges, horizontal ridges, zig-zag ridges, etc.). In some embodiments, the plurality of ridges may be between about 0.1-0.3 millimeters above the surface of the belt. In some embodiments, the plurality of ridges can be between about 0.1-0.5 millimeters above the surface of the belt. In some embodiments, the plurality of ridges may be between about 0.5-0.2 millimeters above the surface of the belt.

In some embodiments, there may be a gap positioned between the attachment points of the left and right side straps and adjacent the ergonomic portion (e.g., where each strap has two attachment points). In general, the gap may contain a curved shape and may allow for greater movement/flexibility in the left and right side straps such that the left and right side straps may be configured for varying facial shapes/sizes.

In general, the opening positioned between the upper and lower ear bands may comprise an egg-like shape. For example, both ends of the opening may include a rounded shape (e.g., semi-circular in some embodiments) that is generally paired with a generally straight edge. In some embodiments, the rounded end closer to the first end of the band is smaller (e.g., diametrically) than the rear rounded end closer to the second end of the band. Typically, the rounded end of the opening may have a diameter of between about 50-75 millimeters. In some embodiments, the rounded end of the opening may have an approximate diameter of between 50-100 millimeters. In some embodiments, the distance between the upper and lower ear straps may gradually increase from the end closer to the mask to the end closer to the headband extension. In some embodiments, the upper ear band may be longer than the lower ear band. In some embodiments, the upper ear straps and the lower ear straps may have similar dimensions (e.g., length and/or width). Generally, the upper ear band can include a contact area (e.g., an angled or sloped surface) that interacts with the back side of the user's ear. The contact region may be about 1-2 millimeters thicker than the average ribbon thickness. In some embodiments, the contact region may be about 0.5-3 millimeters thicker than the average ribbon thickness. The material (e.g., silicon, rubber, fabric, etc.) of the ear band portion may be thicker in the contact region to provide a more comfortable surface for interaction with the user's ear (e.g., if the ear band portion is composed of a thin material, and thus interacts with the back side of the user's ear during wear, the ear band may be uncomfortable for the user because it may irritate (e.g., pierce) the user's skin). In some embodiments, each ear band portion can widen as it extends away from the first end (e.g., the attachment point of the hood).

Disclosed embodiments include an attachment having a male attachment and a female attachment. In general, the male attachment may mate with the female attachment via a magnet. However, in some embodiments, the attachment may include a snap, button, clasp, or other removable connection (e.g., a slidable connection).

In some embodiments, the male attachment member may include a first portion and a second portion. The first portion may include a first side having grooves and ridges and a second side having protrusions. The second portion may include a first side having a raised surface and a second side having an aperture and one or more retaining members. In general, the male attachment member may be configured to interact with a plurality of cut-outs positioned on the headband extension. The male attachment member may be placed within the cutout in response to the fit of the mask to the user's head. In other words, the male attachment member may be moved along the plurality of cuts based on the user's preference. Typically, the protrusion of the first portion of the male attachment member may be placed through one of the plurality of cutouts and may interact with a hole positioned on the second portion of the male attachment member (e.g., may snap into the hole, may be threaded into the hole via threads positioned on the protrusion, etc.). In this manner, one or more retaining members may fit through the cut-outs located adjacent to the cut-outs through which the protrusions are placed. Generally, the one or more retaining members may prevent the attachment from rotating/turning when in use. Additionally, to secure the first portion of the male attachment member to the second portion of the male attachment member, the user may implement grooves and/or ridges positioned on the first side of the first portion of the male attachment member. The ridge may be positioned around the perimeter of the first side of the first portion of the male attachment member, allowing a user to twist/turn the first portion of the male attachment member by grasping the ridge. The groove may be configured to allow the first portion of the male attachment member to be secured to the second portion of the male attachment member via interaction with a flat item such as a coin, fingernail, pin, or the like. In general, the raised surface of the second portion of the male attachment may comprise a magnet and may be configured to interact with the female attachment.

The female attachment member may include a first portion and a second portion. The first portion may include a cavity and one or more connection elements connecting the first portion to the second portion of the female attachment member. In general, the cavity may be configured to (magnetically) interact with a raised surface positioned on the second portion of the male attachment member. In some embodiments, the raised surface may fit snugly within the cavity to prevent the band from moving during wear. Generally, the one or more connecting elements may comprise threads. The one or more connecting elements may fit through holes positioned on the first portion of the female attachment member and may pass through the strap material into the second portion of the female attachment member. While the disclosed embodiments will be understood by those skilled in the art based upon the foregoing disclosure, the following drawings will provide specific examples that further illustrate the disclosure.

Turning now to the drawings, FIG. 1A illustrates an exemplary embodiment of a filter hood 100 that includes a mask 199 configured to interact with at least a portion of a user's face, head, and ears. The exemplary embodiment of fig. 1A illustrates a mask 199 attached to a user's face via a left side strap 170. The left side strap 170 is shown to include the upper left side strap 101, the lower left side strap 102, the ergonomic portion 108, the gap 190, and the opening 106. In the exemplary embodiment of fig. 1A, the left side strap 170 is shown attached to the mask 199 at two attachment points. The first attachment point 191 is located near the upper half of the mask 199 and the second attachment point 192 is located near the lower half of the mask 199. In the exemplary embodiment of fig. 1A, the left side strap 170 is permanently attached to the mask 199 (e.g., by bonding the material of the left side strap 170 to the mask using heat or a mechanical attachment feature such as a clip). However, in some embodiments, the left side strap 170 (and the right side strap 180 (shown in fig. 1B)) may be removably attached to the mask 199.

The opening 106 illustrated in the exemplary embodiment of fig. 1A is shown extending from the ergonomic portion 108 to the rear of the user's ear. In general, the size of the opening 106 may vary depending on the size of the upper left side band 101 and the lower left side band 102 and the presence or absence of the ergonomic portion 108. In some embodiments, the distance between the upper left side strap 101 and the lower left side strap 102 may gradually increase from the end closer to the ergonomic portion 108 to the end closer to the headband extensions 171, 181 (shown in fig. 1C (e.g., the distance between the upper left side strap 101 and the lower left side strap 102 may vary from about 50 millimeters to 80 millimeters)). In some embodiments, the upper left side strap 101 may be longer than the lower left side strap 102. In some embodiments, the upper left side strap 101 and the lower left side strap 102 may have similar dimensions.

The gap 190 illustrated in the exemplary embodiment of fig. 1A is positioned between the first attachment point 191 and the second attachment point 192 and adjacent to the ergonomic portion 108. In general, the gap 190 may comprise a curved shape and may allow for greater movement/flexibility in the band. In addition, the gap 190 may allow less perspiration, dust, debris, etc. to escape from becoming trapped behind the belt.

In the exemplary embodiment of fig. 1A, the ergonomic portion 108 is positioned between the opening 106 and the gap 190. Generally, an ergonomic portion 108 is present to increase the stability of the upper left side strap 101 and the lower left side strap 102. In addition, the ergonomic portion 108 may provide more support to maintain the position of the mask 199 on the user's head, thereby increasing the comfort of the user. Generally, the area of the ergonomic portion 108 may be less than one-third of the area of the opening 106. In some embodiments, the area of the ergonomic portion 108 may be less than about one-quarter of the area of the opening 106. In some embodiments, the area of the ergonomic portion 108 may be less than about half the area of the opening 106.

FIG. 1B illustrates an alternative view of the exemplary embodiment shown in FIG. 1A. In the exemplary embodiment of fig. 1B, a right side view of the mask 199 is shown interacting with the user's head. Similar to the exemplary embodiment shown in fig. 1A, the exemplary embodiment of fig. 1B includes a mask 199 that is attached to the user's face via a right side strap 180. Right side strap 180 is shown to include upper right side strap 103, lower right side strap 104, ergonomic portion 108, gap 190, and opening 106. In general, the right side of the mask 199 may be symmetrical to the left side of the mask 199 across the vertical center line of the mask 199. Thus, the upper right side band 103 and the lower right side band 104 may be identical to (e.g., function similarly to) the upper left side band 101 and the lower left side band 102, respectively. Additionally, the ergonomic portion 108, the gap 190, and the opening 106 of the exemplary embodiment of fig. 1B may be similar to the ergonomic portion 108, the gap 190, and the opening 106 described with reference to fig. 1A.

Fig. 1C illustrates a rear view of an exemplary embodiment of a mask attached to a user's head via an attachment 110. The exemplary mask shown in fig. 1C includes two headband extensions 171, 181 (e.g., a left headband extension 171 and a right headband extension 181). The

headband extensions

171, 181 are shown as overlapping behind the user's head and connected via the attachment 110. The attachment 110 shown in fig. 1C may comprise two parts: a male attachment member and a female attachment member. In general, the male attachment member 220 (shown in fig. 2) and the female attachment member 250 (shown in fig. 2) may interact via a magnetic connection. In some embodiments, the attachment may vary. For example, in some attachments, the attachment may include a snap, buckle, button, or any other means of removably connecting/attaching the left and

right headband extensions

171, 181. Exemplary embodiments of the attachment 110 will be discussed/illustrated in greater detail in fig. 5A-8C.

Figure 2 illustrates a top view of an exemplary embodiment of a mask 299 comprising a left side strap 270 and a right side strap 280. In general, the left side strap 270 may include two portions: a left ear band portion 272 and a left headband extension 271. The left ear band portion 272 can include a left upper side band 201 and a left lower side band 202 that can be joined or joined into the left headband extension 271 at the rear end 296b of the left ear band portion 272. In general, the right side strap 280 may include two portions: a right ear band portion 282 and a right headband extension 281. The right side ear band portion 282 can include an upper right side band 203 and a lower right side band 204 that can be joined or joined into the right side headband extension 281 at the rear end 297b of the right side ear band portion 282. In the exemplary embodiment of fig. 2, the upper left side band 201 and the lower left side band 202 are about the same size, and the upper right side band 203 and the lower right side band 204 are about the same size. In some embodiments, the upper left side strap 201 and the upper right side strap 203 may be longer than the lower left side strap 202 and the lower right side strap 204, respectively. In some embodiments, the upper left side strap 201 and the upper right side strap 203 may be shorter than the lower left side strap 202 and the lower right side strap 204, respectively.

In the exemplary embodiment of fig. 2, left side strap 272 and right side strap 282 are symmetrically positioned across a vertical centerline of mask 299. The upper left 201 and upper right 203 straps are shown positioned equidistant from the top and/or bottom of the mask 299, and the lower left 202 and lower right 204 straps are shown positioned equidistant from the top and/or bottom of the mask 299. In addition, the upper left side strap 201 and the lower left side strap 202 are shown joined to form a left side headband extension 271. Similarly, upper right side strap 203 and lower right side strap 204 are shown joined to form right side headband extension 281. In the exemplary embodiment of fig. 2, the shape of the left and right side straps 272, 282 may be selected based on ergonomic factors (e.g., due to angle calculations, patterns, etc. that interact with different ear sizes/shapes). Accordingly, based on ergonomics, left side strap 272 and right side strap 282 may include opening 206, gap 290, and/or ergonomic portion 208.

The example openings 206 of fig. 2 are shown positioned between the upper left side strap 201 and the lower left side strap 202, and between the upper right side strap 203 and the lower right side strap 204. In the exemplary embodiment of fig. 2, opening 206 comprises an oval shape (e.g., no sharp corners). More specifically, the first and second ends of the opening 206 may include a rounded shape. In the exemplary embodiment of fig. 2, the opening 206 (e.g., the distance between the upper left side strap 201 and the lower left side strap 202; the distance between the upper right side strap 203 and the lower right side strap 204) may become wider from a first end (closer to the face mask 299) to a second end (closer to the headband extensions 271, 281). In some embodiments, the distance between the upper 201, 203 and lower 202, 204 bands may vary from about 50 to 80 millimeters.

The exemplary ergonomic portion 208 of fig. 2 is shown positioned adjacent to the opening 206. More specifically, the ergonomic portion 208 is shown between the gap 290 and the opening 206 positioned on the left and right side straps 272, 282. Generally, the ergonomic portion 208 may provide more support to maintain the position of the mask 299 on the user's head, thereby increasing the comfort of the user. In some embodiments, the area of the ergonomic portion 208 may be less than one-third of the area of the opening 206. In some embodiments, the area of the ergonomic portion 208 may be less than half of the area of the opening 206. In some embodiments, the area of the ergonomic portion 208 may be less than one-quarter of the area of the opening 206.

In the exemplary embodiment of fig. 2, the face shield 299 includes four attachment points located toward the front ends 296a, 297a of the left and right

ear strap portions

272, 282. The first attachment point 291 may be positioned on the upper left half of the face mask 299, the second attachment point 292 may be positioned on the lower left half of the face mask 299, the third attachment point 293 may be positioned on the upper right half of the face mask 299, and the fourth attachment point 294 may be positioned on the lower right half of the face mask 299. In general, the number of attachment points on the left side of the mask 299 may be equal to the number of attachment points on the right side of the mask 299.

As shown in the exemplary embodiment of fig. 2, there may be a gap 290 (adjacent ergonomic portion 208) positioned between the attachment points of left side strap 272 and

right side strap

282, 293, 294. In fig. 2, gap 290 comprises a curved shape and may allow for greater movement/flexibility in left side strap 272 and right side strap 282. In addition, the gap 290 may allow less perspiration, dust, debris, etc. to escape from becoming trapped behind the belt. In some embodiments, the shape of the gap 290 may vary (e.g., rectangular cut, triangular cut, etc.).

Additionally, as shown in fig. 2, the left headband extension 271 includes a plurality of cutouts 205 configured to interact with the male attachment member 220. The male attachment member 220 is shown positioned at the free end of the left headband extension 271. In some embodiments, the male attachment member 220 may be removably attached to allow for a belt sizing configuration based on user preferences. In the exemplary embodiment of fig. 2, the male attachment member 220 is removable and may fit into the plurality of cutouts 205 to adjust the size. The right headband extension 281 is shown as including a female attachment member 250 at the free end. The male attachment piece 220 may mate with the female attachment piece 250 via magnetic interaction. In some embodiments, the positioning of the plurality of cut-outs 205, male attachment members 220, and female attachment members 250 may be varied to achieve the same purpose (e.g., attaching the right headband extension 281 to the left headband extension 271, and vice versa).

Fig. 3A illustrates a bottom view of an exemplary embodiment of a right side strap 380. The right side strap 380 is shown to include the upper right side strap 303, the lower right side strap 304, the opening 306, the gap 390, the ergonomic portion 308, the two

attachment points

393, 394, and the first portion 361 of the female attachment 350. In the exemplary embodiment of fig. 3A, the elements of the right side strap 380 may function similarly to the exemplary right side strap 280 discussed with reference to fig. 2. In the exemplary embodiment of fig. 3A, it can further be seen that the upper right side strap 303 includes a contact region 307 (e.g., angled surface) that interacts with the back side of the user's ear. The material (e.g., silicon) of the upper right band 303 may be thicker in the contact area/region 307 to provide a more comfortable surface for interaction with the user's ear. An exemplary embodiment of the first portion 361 of the female attachment piece 350 will be discussed in more detail with reference to fig. 8A.

Fig. 3B illustrates a top view of an exemplary embodiment of a right side strap 380 (similar to the exemplary embodiment shown in fig. 3A). The right side strap 380 is shown as including the upper right side strap 303, the lower right side strap 304, the opening 306, the gap 390, the ergonomic portion 308, the two

attachment points

393, 394, and the second portion 364 of the female attachment member 350. In the exemplary embodiment of fig. 3B, the elements of the right side strap 380 may function similarly to the exemplary right side strap 280 discussed with reference to fig. 2. In the exemplary embodiment of fig. 3B, it can further be seen that the ergonomic portion 308 contains a plurality of ridges. The plurality of ridges may curve outwardly (e.g., convex) away from the mask/attachment points 393, 394 and may allow the right side strap 380 to maintain its shape (more specifically, the curved pattern of the plurality of ridges may prevent the upper right side strap 303 and the lower right side strap 304 from being too stiff, causing discomfort to the user; in general, the plurality of ridges may increase the flexibility of the right side strap 380). In some embodiments, the plurality of ridges may include varying patterns (e.g., vertical ridges, horizontal ridges, saw-tooth shaped ridges, etc.). In some embodiments, the plurality of ridges may be placed flush with the surface of the right side strap 380. In some embodiments, the plurality of ridges may extend beyond the surface of the right side strap 380.

Fig. 4A illustrates a bottom view of an exemplary embodiment of left side strap 470. Left side strap 470 is shown to include upper left side strap 401, lower left side strap 402, opening 406, gap 490, ergonomic portion 408, two

attachment points

491, 492, and a plurality of incisions 405. In the exemplary embodiment of fig. 4A, the elements of left side strap 470 may function similarly to the exemplary left side strap 270 discussed with reference to fig. 2. In the exemplary embodiment of fig. 4A, it can further be seen that the left upper band 401 includes a contact region 407 (e.g., an angled surface) that interacts with the back side of the user's ear. The material (e.g., silicon) of the upper left band 401 may be thicker in the contact area/area to provide a more comfortable surface for interaction with the user's ear. Additionally, in the exemplary embodiment of fig. 4A, a plurality of cut-outs 405 are shown extending through the left headband extension 471. The plurality of cuts 405 may allow a user to select a particular strap size configuration based on a desired fit of the mask.

Fig. 4B illustrates a top view of an exemplary embodiment of a left side strap 470 (similar to the exemplary embodiment of fig. 4A). The left side strap 470 is shown to include a left upper side strap 401, a left lower side strap 402, an opening 406, a gap 490, an ergonomic portion 408, two

attachment points

491, 492, a plurality of incisions 405, and a first portion 430 of a male attachment 420. In the exemplary embodiment of fig. 4B, the elements of left side strap 470 may function similarly to the exemplary left side strap 270 discussed with reference to fig. 2. In the exemplary embodiment of fig. 4B, it can further be seen that the ergonomic portion 408 contains a plurality of ridges (previously discussed with reference to fig. 3B). Additionally, the exemplary embodiment of fig. 4B includes a male attachment member 420 positioned at the free end of the left headband extension 471. Generally, the male attachment member 420 may be removably attached and may interact with the plurality of notches 405 to allow a user to move the male attachment member 420 to achieve a particular fit of the mask.

Fig. 5A illustrates a top view of an exemplary embodiment of a male attachment member 520 attached to a headband extension 571 comprising a left side band 570 of a plurality of cut-outs 505. More specifically, the exemplary embodiment shown in fig. 5A illustrates a first side of the first portion 530 of the male attachment element 520. The first side of the first portion 530 of the male attachment member 520 is shown as containing a groove 532 and a plurality of ridges 533 positioned around the perimeter of the first side of the first portion 530 of the male attachment member 520. In general, the groove 532 and the plurality of ridges 533 may be used to tighten/loosen the male attachment member 520. The user may grasp the plurality of ridges 533 (e.g., with their fingers) to tighten/loosen the male attachment 520. In addition, the user may use the slot to tighten/loosen the male attachment member 520. In general, the slot 532 may interact with various flat/thin objects such as coins, fingernails, pins, and the like. In fig. 5A, there are two arrows for indicating that the male attachment 520 is rotatable. In some embodiments, arrows may not be shown.

Fig. 5B illustrates a side view of an exemplary embodiment of a male attachment element 520 that includes a first portion 530 of the male attachment element 520 and a second portion 540 of the male attachment element 520. In general, the first portion 530 of the male attachment member 520 may include a ridge 533 (positioned on the first portion 530 of the male attachment member 520) and a protrusion 535 (positioned on the second side 543 of the first portion 530 of the male attachment member 520), as indicated in the exemplary embodiment of fig. 5B. In general, the second portion 540 of the male attachment element 520 may include a raised surface 542 (positioned on the first side 541 of the second portion 540 of the male attachment element 520), an aperture (shown in fig. 7B) (positioned on the second side 543 of the second portion 540 of the male attachment element 520), and a plurality of retaining members 545 (positioned on the second side 543 of the second portion 540 of the male attachment element 520). As shown in the exemplary embodiment of fig. 5B, the protrusions 535 of the first portion 530 of the male attachment 520 may be configured to interact with the holes of the second portion 540 of the male attachment 520. In some embodiments, the aperture of the second portion 540 may be placed flush with the surface of the second side 543 of the second portion 540 of the male attachment 520. In some embodiments, the aperture of the second portion 540 may extend/protrude outwardly from a surface of the second side 543 of the second portion 540 of the male attachment member 520. In general, the raised surface 542 positioned on the second portion 540 of the male attachment 520 may include a magnet configured to interact with the female attachment. Additionally, in the exemplary embodiment of fig. 5B, two retaining members 545 may be configured to interact with a plurality of cut-outs 505 positioned on the headband extension 571. In this manner, the two retaining members 545 may prevent the male attachment member 520 from rotating during use, thereby increasing the stability of the attachment on the mask. In some embodiments, the number of retaining members 545 may vary. In general, the male attachment member 520 may include one retaining member 545 on either side of the aperture and/or protrusion 535. However, in some embodiments, the number of retaining members 545 may generally vary from zero to up to four.

Fig. 6A illustrates a top view of an exemplary embodiment of a first portion 630 of a male attachment member 620 comprising a groove 632 and a ridge 633. Generally, the groove 632 and the plurality of ridges 633 may be used to tighten/loosen the male attachment 620. The user may grasp the plurality of ridges 633 (e.g., with their fingers) to tighten/loosen the male attachment 620. Additionally, the user may use the slot 632 to tighten/loosen the male attachment 620. In general, the slot 632 may interact with various flat/thin objects such as coins, fingernails, pins, and the like. In the exemplary embodiment of fig. 6A (as in the exemplary embodiment of fig. 5A), there are two arrows that are used to indicate that the male attachment 620 is rotatable. In some embodiments, arrows may not be shown.

Fig. 6B illustrates a bottom view (e.g., second side 634 view) of an exemplary embodiment of a first portion 630 of a male attachment element 620 including a protrusion 635. Generally, the protrusion 635 may be placed through a plurality of cutouts and may interact with a hole positioned on the second portion (shown in fig. 7B) of the male attachment member 620. For example, in some embodiments, the protrusion 635 may snap into a hole of the second portion of the male attachment member 620. For example, in some embodiments, the protrusion 635 may be threaded into a hole of the second portion of the male attachment member 620. In this case, the protrusion 635 may comprise threads that interact with threads positioned within the bore.

Fig. 7A illustrates a top view (e.g., first side 741 view) of an exemplary embodiment of a second portion 740 of a male attachment member 720 that includes a raised surface 742. Typically, the raised surface 742 may comprise a magnet that interacts with a magnet within the cavity of the first portion of the female attachment shown in fig. 8A.

Fig. 7B illustrates a bottom view (e.g., second side 743 view) of an exemplary embodiment of a second portion 740 of the male attachment member 720 that includes an aperture 744 and a plurality of retaining members 745. In the exemplary embodiment of fig. 7B, the hole 744 is shown as being placed flush with the surface of the second portion 740 of the male attachment member 720. In other words, the aperture 744 does not protrude outward as the retaining member 745 is shown. Additionally, in the exemplary embodiment of fig. 7B, two retaining members 745 are shown positioned on either side of aperture 744. In general, retaining member 745 may be configured to interact with a plurality of cut-outs positioned on the headband extension. Generally, the retaining member 745 may prevent the male attachment member 720 from rotating during use, thereby increasing the stability of the removable attachment member to the mask.

Fig. 8A illustrates a bottom view of an exemplary embodiment of a first portion 861 of a female attachment member 850 containing a cavity 862 and a plurality of connecting elements 863. In general, the cavity 862 may be configured to (magnetically) interact with a raised surface positioned on the second portion of the male attachment member. In some embodiments, the raised surface may fit closely within the cavity 862 to prevent the band from moving during wear. Generally, one or more connecting elements 863 can include threads, as shown in the exemplary embodiment of fig. 8A. The one or more connecting elements 863 can fit through holes positioned on the first portion 861 of the female attachment member 850 and can pass the strap material into the second portion 864 (shown in fig. 8B) of the female attachment member 850.

Fig. 8B illustrates a top view of an exemplary embodiment of the second portion 864 of the female attachment member 850. In some embodiments, the surface of the second portion 864 of the female attachment member 850 may include a shallow depression (dip)/recess (dent) 895. The shallow depression/recess 895 may be configured to interact with a user's fingers (e.g., allowing the user to more easily grasp the attachment for removal/attachment purposes).

Fig. 8C illustrates a side view of an exemplary embodiment of a female attachment element 850 including a first portion 861 and a second portion 864. In the exemplary embodiment of fig. 8C, the first portion 861 of the female attachment member 850 is shown attached to the second portion 864 of the female attachment member 850 via a connecting element 863. Generally, during attachment of the female attachment piece 850, the first portion 861 of the female attachment piece 850 may be positioned on one side of the free end of the headband extension, while the second portion 864 of the female attachment piece 850 may be positioned on the opposite side of the free end of the headband extension. In this manner, the connecting element 863 can engage the first portion 861 and the second portion 864 of the female attachment member 850 with the headband extension.

Apparatus and method embodiments have been described above, particularly with respect to the accompanying drawings, and various additional embodiments may include, but are not limited to:

in a first embodiment, a filter cage comprises: a face mask; two belts; and an attachment; wherein: the two straps include a first strap and a second strap configured to be attached to the left side of the mask and the right side of the mask; each of the two bands contains two portions: an ear band portion and a headband extension portion; and the attachment is configured to interact with each of the headband extensions. A second embodiment may include the filter housing of the first embodiment, wherein each ear band portion comprises an upper band and a lower band, and wherein the upper and lower bands are oriented approximately parallel to each other. A third embodiment may include the filter housing of the first through second embodiments, wherein each ear strap portion further comprises an opening, wherein the opening is configured to interact with the ear of the user, wherein a first end of the opening closest to the mask is narrower than a second end of the opening closest to the ear of the user. A fourth embodiment may include the filter housing of the first through third embodiments, wherein each upper band comprises a contact region configured to interact with a user's ear, and wherein the contact region comprises a thicker material that interconnects with the user's ear. A fifth embodiment may include the filter hood of the first through fourth embodiments, wherein the upper band and the lower band are incorporated into headgear extensions, wherein the first headgear extension includes a male attachment element and the second headgear extension includes a female attachment element. A sixth embodiment may include the filter sock of the first through fifth embodiments, wherein the attachment comprises at least one of: snaps, magnets, snap-fit features, or other removable connectors. A seventh embodiment may include the filter sock of the first through sixth embodiments, wherein each strap comprises at least two attachment points, wherein a first attachment point is positioned on an upper left side of the filter sock, a second attachment point is positioned on a lower left side of the filter sock, a third attachment point is positioned on an upper right side of the filter sock, and a fourth attachment point is positioned on a lower right side of the filter sock. An eighth embodiment may include the filter cage of the first through seventh embodiments, wherein the female attachment member comprises a first portion and a second portion, wherein the first portion of the female attachment member comprises a cavity for interacting with the raised surface of the male attachment member, and wherein the first portion of the female attachment member is connected to the second portion of the female attachment member at the free end of the second headband extension. A ninth embodiment may include the filter cage of the first through eighth embodiments, wherein the first portion of the female attachment member is connected to the second portion of the female attachment member with one or more connection elements, wherein the one or more connection elements comprise threads. A tenth embodiment may include the filter sock of the first through ninth embodiments, wherein the male attachment member is configured to interact with a plurality of cutouts positioned on the first headband extension, and wherein the first portion of the male attachment member includes a protrusion configured to extend through at least one of the plurality of cutouts and mate with an aperture positioned on the second portion of the male attachment member. An eleventh embodiment may include the filter cage of the first through tenth embodiments, wherein the female attachment member further comprises one or more retaining members configured to interact with the plurality of cutouts, and wherein the retaining members prevent the male attachment member from rotating once the male attachment member is approximately fully attached to the first headband extension. A twelfth embodiment may include the filter cage of the first through eleventh embodiments, wherein the first portion of the male attachment member further comprises one or both of a groove and a plurality of ridges, wherein the groove and the plurality of ridges are configured to allow a user to rotatably attach the first portion of the male attachment member to the second portion of the male attachment member via the protrusion and the aperture, respectively. A thirteenth embodiment may include the filter cage of the first through twelfth embodiments, further comprising an ergonomic portion positioned adjacent the mask between the upper and lower straps and comprising a plurality of ridges. A fourteenth embodiment can include the filter sock of the first through thirteenth embodiments, further comprising a gap positioned adjacent the filter sock between the first and second attachment points and between the third and fourth attachment points.

Example embodiments may also relate to methods for using such filter cage embodiments (e.g., similar to those described above, which may be considered as optionally incorporated herein for discussion of the methods). For example, such method embodiments may include, but are not limited to, the following:

in a fifteenth embodiment, a method for using a filter hood includes two bands, wherein a first band is attached to a left side of the filter hood and a second band is attached to a right side of the filter hood, wherein the two bands include two portions: an ear band portion and a headband extension portion, wherein at least one headband extension portion includes a plurality of cut-outs configured to interact with an attachment, and wherein each headband includes an attachment, comprising the steps of: configuring the filter mask to interconnect with at least a portion of a user's face; placing the first ear band portion around a left ear of a user; placing the second ear band portion around the right ear of the user; and attaching the first headband extension to the second headband extension with an attachment. A sixteenth embodiment may include the method of the fifteenth embodiment, further comprising adjusting the fit of the filter sock, wherein adjusting the fit of the filter sock comprises: removing the male attachment members from the plurality of cuts on the first headband extension; and placing the male attachment member in one of the plurality of cutouts (corresponding to the fit of the filter housing desired by the user). A seventeenth embodiment may include the method of the fifteenth to sixteenth embodiments, wherein the filter sock comprises: a face mask; two belts; and an attachment; wherein the two straps comprise a first strap and a second strap configured to be attached to the left side of the mask and the right side of the mask; each of the two bands contains two portions: an ear band portion and a headband extension portion; and the attachment is configured to interact with each of the headband extensions. An eighteenth embodiment may include the method of the fifteenth through seventeenth embodiments, wherein each ear band portion comprises an upper band and a lower band, and wherein the upper and lower bands are oriented approximately parallel to each other. A nineteenth embodiment may include the method of the fifteenth to eighteenth embodiments, wherein each ear strap portion further comprises an opening, wherein the opening is configured to interact with the ear of the user, wherein a first end of the opening closest to the mask is narrower than a second end of the opening closest to the ear of the user. A twentieth embodiment may include the method of the fifteenth to nineteenth embodiments, wherein each upper band comprises a contact region configured to interact with the ear of the user, and wherein the contact region comprises a thicker material that interconnects with the ear of the user. A twenty-first embodiment may include the method of the fifteenth to twentieth embodiments, wherein the upper band and the lower band are joined into headband extensions, wherein the first headband extension includes a male attachment element and the second headband extension includes a female attachment element. A twenty-second embodiment may include the method of the fifteenth to twenty-first embodiments, wherein the attachment comprises at least one of: snaps, magnets, snap-fit features, or other removable connectors. A twenty-third embodiment may include the method of the fifteenth to twenty-second embodiments, wherein each band comprises at least two attachment points, wherein a first attachment point is positioned on an upper left side of the filter cage, a second attachment point is positioned on a lower left side of the filter cage, a third attachment point is positioned on an upper right side of the filter cage, and a fourth attachment point is positioned on a lower right side of the filter cage. A twenty-fourth embodiment may include the method of the fifteenth to twenty-third embodiments, wherein the female attachment member comprises a first portion and a second portion, wherein the first portion of the female attachment member comprises a cavity for interacting with the raised surface of the male attachment member, and wherein the first portion of the female attachment member is connected to the second portion of the female attachment member at the free end of the second headband extension. A twenty-fifth embodiment may include the method of the fifteenth to twenty-fourth embodiments, wherein the first portion of the female attachment member is connected to the second portion of the female attachment member with one or more connection elements, wherein the one or more connection elements comprise threads. A twenty-sixth embodiment may include the method of the fifteenth to twenty-fifth embodiments, wherein the male attachment member is configured to interact with a plurality of cutouts positioned on the first headband extension portion, and wherein the first portion of the male attachment member includes a protrusion configured to extend through at least one of the plurality of cutouts and mate with an aperture positioned on the second portion of the male attachment member. A twenty-seventh embodiment may include the method of the fifteenth to twenty-sixth embodiments, wherein the male attachment member further comprises one or more retaining members configured to interact with the plurality of cutouts, and wherein the retaining members prevent the male attachment member from rotating once the male attachment member is approximately fully attached to the first headband extension. A twenty-eighth embodiment may include the method of the fifteenth through twenty-seventh embodiments, wherein the first portion of the male attachment member further comprises one or both of a groove or a plurality of ridges, wherein the groove and the plurality of ridges are configured to allow a user to rotatably attach the first portion of the male attachment member to the second portion of the male attachment member via the protrusion and the hole, respectively. A twenty-ninth embodiment may include the method of the fifteenth to twenty-eighth embodiments, further comprising an ergonomic portion positioned adjacent the mask between the upper and lower straps and comprising a plurality of ridges. A thirtieth embodiment may include the method of the fifteenth to twenty-ninth embodiments, further comprising a gap positioned adjacent the filter sock between the first and second attachment points and between the third and fourth attachment points.

While various embodiments in accordance with the principles disclosed herein have been shown and described above, modifications thereof can be made by one skilled in the art without departing from the spirit and teachings of the disclosure. The embodiments described herein are merely representative and are not intended to be limiting. Many variations, combinations, and modifications are possible and are within the scope of the disclosure. Alternative embodiments resulting from combining, integrating, and/or omitting features of the embodiments are also within the scope of the present disclosure. Accordingly, the scope of protection is not limited by the description set out above, but is instead defined by the claims that follow the scope, including all equivalents of the subject matter of the claims. Each and every claim is included in the specification as a further disclosure and a claim is an embodiment of the present invention. Moreover, any advantages and features described above may be associated with particular embodiments, but the application of the claims as filed should not be limited to processes and structures accomplishing any or all of the above advantages or having any or all of the above features.

In addition, section headings as used herein are provided to conform to the suggestions of 37 c.f.r.1.77 or otherwise provide organizational cues. These headings should not be used to limit the invention or to describe features of the invention as may be set forth in any claims presented by this disclosure. In particular and by way of example, although a title may refer to a "technical field," claims should not be limited by the language chosen under this title to describe the so-called technical field. Further, the techniques described in the "background" should not be construed as an admission that certain techniques are prior art to any invention in this disclosure. The summary of the invention is not to be seen as limiting the features of the invention set forth in the claims. Furthermore, references to "the invention" in the singular in this disclosure should not be used to argue that there is only a single point of innovation in this disclosure. Multiple inventions may be set forth according to the limitations of the multiple claims set forth in this disclosure, and such claims correspondingly define the invention(s) that are thereby protected and their equivalents. In all cases, the scope of the claims should be considered in their own right in light of the disclosure, and should not be constrained by the headings set forth herein.

Use of broader terms such as "comprising," including, "and" having "should be understood to provide support for narrower terms such as" consisting of … …, "" consisting essentially of … …, "and" consisting essentially of … …. Use of the terms "optionally," "may," "potentially," "possibly," and the like, with respect to any element of an embodiment, mean that the element is not required, or alternatively is required, both alternatives being within the scope of the embodiment. Furthermore, the reference examples are provided for illustrative purposes only and are not intended to be exclusive.

While various embodiments have been provided in the present disclosure, it should be understood that the disclosed systems and methods may be embodied in many other specific forms without departing from the spirit or scope of the present disclosure. The present examples are to be considered as illustrative and not restrictive, and the invention is not to be limited to the details given herein. For example, various elements or components may be combined or integrated in another system, or certain features may be omitted, or not implemented.

Moreover, techniques, systems, subsystems, and methods described and illustrated in the various embodiments as discrete or separate may be combined or integrated with other systems, modules, techniques, or methods without departing from the scope of the present disclosure. Other items shown or discussed as directly coupled or communicating with each other may be indirectly coupled or communicating through some interface, device, or intermediate component whether electrically, mechanically, or otherwise. Other examples of changes, substitutions, and alterations are ascertainable by one skilled in the art and could be made without departing from the spirit and scope disclosed herein.

Claims

1. A filter cage (100) comprising:

a mask (199);

two bands (170, 180); and

an attachment mechanism (110);

wherein:

the two straps (170, 180) include a first strap (170) and a second strap (180) configured to be attached to a left side of the mask (199) and a right side of the mask (199);

each of the two bands (170, 180) comprises two portions: an ear band portion (272, 282) and a headband extension portion (171, 181); and

the attachment mechanism (110) being configured to interact with each of the headband extensions (171, 181) to allow removable attachment of the two bands, wherein each ear band portion comprises a front end (296 a, 297 a) and a rear end (296 b, 297 b),

wherein the first headband extension (171) comprises a male attachment member (220) and the second headband extension (181) comprises a female attachment member (250),

wherein the male attachment member (520) is configured to interact with a plurality of cutouts (505) positioned on the first headband extension portion (571), and wherein the first portion (630) of the male attachment member (520) comprises a protrusion (635) configured to extend through at least one of the plurality of cutouts (505) and mate with a hole (744) positioned on the second portion (740) of the male attachment member (520), and

wherein the first side of the first portion (530) of the male attachment member (520) comprises a groove (532) and a plurality of ridges (533) positioned around a perimeter of the first side of the first portion (530) of the male attachment member (520).

2. A filter cage according to claim 1 wherein each ear band portion (272, 282) comprises an upper band portion (101, 103) and a lower band portion (102, 104); wherein the upper band portion (101, 103) and the lower band portion (102, 104) are oriented approximately parallel to each other; wherein the rear ends (296 b, 297 b) of respective upper and lower belt portions (101, 103, 102, 104) are attached or joined together; and wherein the front ends (296 a, 297 a) of respective upper (101, 103) and lower (102, 104) strap portions are attached to the face mask (199) on respective sides.

3. The filter sock of claim 2, wherein each ear strap portion (272, 282) further comprises an opening (106), wherein the opening (106) is configured to interact with a user's ear, wherein a first end of the opening (106) closest to the mask (199) is narrower than a second end of the opening (106) closest to the user's ear.

4. The filter housing of claim 2, wherein each upper band portion (101, 103) comprises a contact region (307, 407) configured to interact with a user's ear, and wherein the contact region (307, 407) comprises a thicker material that interconnects with the user's ear.

5. A filter housing according to claim 2, wherein the upper band portion (101, 103) and the lower band portion (102, 104) are incorporated into a headband extension (171, 181).

6. The filter cage of claim 1, wherein the attachment mechanism (110) comprises at least one of: snaps, magnets, snap-fit features, or other removable connectors.

7. The filter housing of claim 1, wherein each strap (170, 180) comprises at least two attachment points, wherein a first attachment point (291) is positioned on an upper left side of the face mask (299), a second attachment point (292) is positioned on a lower left side of the face mask (299), a third attachment point (293) is positioned on an upper right side of the face mask (299), and a fourth attachment point (294) is positioned on a lower right side of the face mask (299).

8. The filter cage of claim 5, wherein the female attachment piece (850) comprises a first portion (861) and a second portion (864), wherein the first portion (861) of the female attachment piece (850) comprises a cavity (862) for interacting with the raised surface (542) of the male attachment piece (520), and wherein the first portion (861) of the female attachment piece (850) is connected to the second portion (864) of the female attachment piece (850) at the free end of the second headband extension portion (281) with one or more connection elements (863), wherein the one or more connection elements (863) comprise threads.

9. The filter cage of claim 1, wherein the male attachment member (520) further comprises one or more retaining members (745) configured to interact with the plurality of cutouts (505), and wherein the one or more retaining members (745) prevent the male attachment member (520) from rotating once the male attachment member (520) is approximately fully attached to the first headband extension (571).