WO2012139059A1

WO2012139059A1 - Oribal surface cleaning apparatus

Info

Publication number: WO2012139059A1
Application number: PCT/US2012/032624
Authority: WO
Inventors: Jeffrey T. Hruby
Original assignee: HRUBY ORBITAL SYSTEMS Inc
Current assignee: HRUBY ORBITAL SYSTEMS Inc
Priority date: 2011-04-06
Filing date: 2012-04-06
Publication date: 2012-10-11
Anticipated expiration: 2013-10-06

Abstract

Orbital surface cleaning apparatus (400) are presented. An orbital surface cleaning apparatus (400) can include a driver motor (410) coupled to a plate (130) having offset distributed weights (133). As the plate (130) rotates, the offset weights (133) cause oscillations of the apparatus (400) cleaning head. A driver motor (410) capable of 80 RPM can induce over 1700 RPM oscillations. The orbital surface cleaning apparatus (400) has a spray assembly for dispensing a cleaning solution to the ground area adjacent to the drive plate (130).

Description

ORIBAL SURFACE CLEANING APPARATUS

[0001] This application claims the benefit of priority to U.S. provisional application having serial number 61/472271 filed on April 6^th, 2011 and International Application Serial No. PCT/US09/68467 filed on December 17^th, 2009. These and all other extrinsic materials discussed herein are incorporated by reference in their entirety. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.

Field of the Invention

[0002] The field of the invention is orbital surface cleaning technologies.

Background

[0003] Floor cleaning apparatus are heavy, bulky, and cumbersome to operate. Orbital floor cleaning apparatus exacerbates the negative aspects of floor cleaning apparatus due to offset weights used to achieve orbital motion. The weights are used to achieve desirable cleaning oscillations. Unfortunately, such apparatus are made to be heavy to counterbalance motions of the weights. The result is a difficult-to-use apparatus that provides an uncomfortable experience for the user. For example, U.S. patent 5,355,542 to Oreck et al. titled "Orbiter Floor Apparatus", granted October 18, 1994, describes a floor cleaning apparatus that is bulky, difficult to use, excessive vibration, lacks sufficient performance (insufficient dirt extraction, cleaning).

[0004] One issue with the Oreck approach is that is requires many off center moving parts are required to achieve desired orbital motion at the expense of user comfort. Such approaches are considered disadvantageous because the parts create numerous stresses during use. A more ideal orbital floor cleaning system would utilize fewer parts with higher precision to generating desirable motion, while also balancing user comfort.

[0005] Another issue with the Oreck approach is that it fails to meet the industry standards as a deep cleaner for carpets and rugs (see the Carpet and Rug Institute Seal of Approval Program at > \ v > . ; r : v i y y y ¾_. ) ·

[0006] Furthermore, the Oreck design does not provide an apparatus that rests on wheels during operating of the machine, making it difficult to guide during operation. The Oreck design also relies on a gravity- fed cleaning solution dispenser, which can lead to over wetting and lack of moisture control on the work surface.

[0007] What has yet to be appreciated is floor cleaning apparatus can be produced to have modular parts to allow users to quickly adapt an apparatus for a particular purpose. Such an apparatus can include an orbital drive assembly configured with few parts, thus eliminating costly maintenance or downtime. Furthermore, the modularity of an apparatus allows nontechnical users to quickly replace parts, to upgrade the apparatus, or otherwise configure the apparatus for a target application. A modular apparatus allow for easily breaking the apparatus down and transporting it to new locations. Such an approach can be

advantageously employed while maintaining a comfortable experience for the user. In addition, it has yet to be appreciated that an orbital floor cleaning apparatus can meet industry standards and requirements for all work surface types (e.g., carpets, rugs, hard floors, concrete, wood, stone, tile, grout, brick, vinyl/fcv/linoleum, etc).

[0008] Thus, there is still a need for improved orbital cleaning apparatus. Summary of The Invention

[0009] The present invention provides apparatus, systems and methods where an orbital floor cleaning apparatus can include a folding handle assembly and an orbital drive assembly. In one aspect of the inventive subject matter an orbital floor cleaning apparatus can include an orbital drive motor disposed on a top surface of a driver base, and handle assembly coupled to the driver base. Preferred orbital driver assemblies comprise a driver motor, a driver plate, a bearing assembly, and a pad driver. The motor couples through the driver base to the driver plate via a drive shaft. Preferred driver plates include one or more offset weights to provide an oscillation motion as the motor causes the driver and driver plate to rotate. A bearing assembly can be disposed between the driver plate and the driver to allow for smooth oscillating motion.

[0010] Contemplated handle assemblies can include one or more advantageous features. For example, the handle assembly can comprise one or more hinge connectors that allow the handle to fold back on itself, possibly through an approximately 180 degree angle, to reduce the overall size of the apparatus. Additionally, the handle assembly can include vertical grips, which can include one or more actuators used to control the apparatus. [0011] In other aspects of the inventive subject, contemplated orbital floor cleaning apparatus can comprise one or more field replaceable parts. For example, the following parts can be replaced by non-technical individuals: driver plates, pads, driver motors, bottle cartridges, spray assemblies, or other parts. Modularity of flooring cleaning apparatus allows for ease of maintenance or ease of transport.

[0012] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawings in which like numerals represent like components.

Brief Description of The Drawing

[0013] Fig. 1 is an exploded view of a possible orbital drive assembly.

[0014] Fig. 2 illustrates an actual embodiment of an apparatus having a driver base, a driver plate, offset weights, and a bearing assembly.

[0015] Fig. 3 illustrates a pattern of rotation and oscillations resulting from the disclose configuration of an orbital drive assembly. [0016] Fig. 4A illustrates features of one possible embodiment of an orbital floor cleaning apparatus.

[0017] Fig. 4B illustrates the apparatus of Figure 4A in a horizontal cleaning position.

[0018] Fig. 4C illustrates the apparatus of Figure 4A in a vertical maintenance position.

[0019] Fig. 4D illustrates the apparatus of Figure 4A in use where a user can operate the apparatus from actuators disposed on vertical grips.

[0020] Fig. 4E illustrates the apparatus of Figure 4A where the handle assembly has been folded down for transport.

[0021] Fig. 4F illustrates a bottle holder frame for the orbital floor cleaning apparatus of Figure 4A. [0022] Figs. 5A and 5B illustrate various views of a brush pad. [0023] Fig. 6 illustrates a counter weight plate and a driver. [0024] Fig. 7 is an exploded view of a driver assembly.

Detailed Description

[0025] The following discussion provides an overview of a modular orbital floor cleaning apparatus. Various elements or parts of the disclosed apparatus can be configured to be field- replaceable thus allowing for modification of the apparatus by an unskilled user. Parts of the system can be easily removed through one or more mechanical connectors, possibly comprising wing nuts, hook-and-loop fasteners (e.g., Velcro™), or other mechanical connectors. One should note that the various elements are considered to be field replaceable even if the following disclosure lacks such assertions. [0026] One aspect of the inventive subject matter includes an orbital drive assembly. In Figure 1, orbital drive assembly 100 comprises multiple generally circular parts disposed along a centerline defined by the axis of drive shaft 1 15.

[0027] Motor 1 10 can be disposed on an upper surface of an orbital base 1 13. In some embodiments, motor 1 10 can be mechanically mounted to orbital base 1 13 or to a handle assembly mounted to orbital base 1 13. Preferably, motor 1 10 includes drive shaft 1 15 that extends through orbital base 1 13 to the various parts disposed on the underside of base 1 13.

[0028] Drive shaft 1 15 can include a hollow, threaded interior configured to receive a pin or set screw 1 17. Set screw 1 17 can be used to mechanically couple driver 150 to motor 1 10. Drive shaft 1 15 can be inserted through the holes in the various parts to reach driver 150. The drive shaft holes are represented by dashed lines in the center of the parts.

[0029] Shaft support 120 can be configured to shroud and reinforce drive shaft 1 15 against stresses resulting from vibration of the orbital assembly 100 during use. Specifically, shaft support 120 has a hole with an inner diameter that has been machine-cut with very high precision in order to ensure a tight press-fit with the outer diameter of drive shaft 1 15. This tight tolerance press-fit helps to reduce wobble and vibration that may occur during use. Furthermore, shaft support 120 has a disc portion that circumferentially extends at a 90 degree angle from drive shaft 1 15. The 90 degree angle has also been machined with extremely tight tolerances to ensure that vibration is reduced. Finally, the centricity of the hole with respect to the disc portion on shaft support 120 has been placed with very high tolerances in order to provide proper balance and minimal vibration during use. The diameter of the disc portion of shaft support 120 is not mere design choice, rather, it has been carefully selected in order to achieve sufficient support to plate 130 (and driver 150) while still allowing a desired amount of flexibility in driver 150.

[0030] Driver plate 130 can be disposed under shaft support 120 as shown. Preferably plate 130 comprises one or more of weights 133 distributed asymmetrically around plate 130. Having displaced weights 133 provides for an oscillatory motion of a cleaning pad mounted on driver 150 (see Figure 3). In some embodiments plate 130 allows a user to adjust positions of weights 133, possibly via one or more holes or slots disposed about plate 130.

[0031] Beneath plate 130, one or more of washer 135 can be used to provide space between plate 130 and bearing assembly 140.

[0032] Bearing assembly 140 is also illustrated as being symmetric for clarity about drive shaft 115. In a preferred embodiment, bearing assembly 140 has an offset shaft hole. The offset shaft hole coupled with the movement of weights 133 to allow driver 150 to rotate as well as oscillate about a common center. [0033] Bearing assembly 140 preferably comprises bearing housing 143 in which is disposed bearing 141. Bearing center 147 inserts into the center of bearing 141 and can include a shaft hole, through which drive shaft 115 fits. Bearing center 147 can be held within housing 143 and within bearing 141 using retaining ring 145, where retaining ring 145 can be

mechanically coupled to housing 143. [0034] Driver 150 represents a plate or disk coupled to drive shaft 115. Cleaning pads can be attached to the underside of driver 150. Motor 110 causes driver 150 to rotate and oscillate via rotation of drive shaft 115. Shaft 115 is typically about 5/8 inches (about 1.59 centimeters) in diameter. Driver 150 can couple to shaft 115 via pin or set screw 117. Set screw 117 can have a diameter of 3/8 inches (about 0.95 centimeters) and can screw into a threaded receiving cavity of shaft 115.

[0035] Figure 2 illustrates an actual embodiment of various aspects of a contemplated orbital drive assembly having parts disposed under driver base 213. The illustrated embodiment represents a Hruby Orbital Systems™ Orbot™. One should note that weights 233 are offset and distributed asymmetrically about plate 230. One should also note that bearing assembly 240 is disposed offset from the shaft hole. [0036] The orbital/oscillating motion is preferably generated by the various precision machined parts shown in Figures 1 and 2. A driver (e.g,. a driver 150) is mounted to an offset free spinning bearing assembly 240 that is mounted to the counter weight plate 230 having mounted weights 233. The orbital/oscillating drive motion is generated as counter weight plate 230 spins around bearing assembly 240. As the motor drives counter weight plate 230 the driver then begins to spin in one direction (e.g., at roughly 80 rpm) and at the same time the driver also oscillates/orbits around the central shaft point. Together with these two motions drive the orbital/oscillating drive motion (see Figure 3).

[0037] The parts shown in Figures 1 and 2 play important roles in generating the

orbital/oscillating motion, so do the characteristics involved in the design, shape, size, and weight of the various parts. For example, characteristics can include weight of the pad drivers, hook-and-loop pad fastener plate, cleaning pads (e.g., SuperZorb™ Pad, Agiclean™ Pad, etc.), glider system, the motor design, Orbot™ machine design (e.g., mounting and pin point of the wheels, axle, position of the rod locking lever, pull latch etc.), position where the bottle cartridge system is mounted on the handle assembly (e.g., weight distribution), or Orbot base design, Orbot handle assembly (e.g., length and mounting positions from the wheel axle to where the arms pivot the base located on the sides of the motor etc.). The folding hinge design on the handle assembly also plays an important role in terms of vibration control. The resulting disclosed configuration provides for a smooth, comfortable experience to a user.

[0038] Including wheels in an orbital cleaning apparatus provides relieve on the working surface during operation of the apparatus since less weight is transferred from the driver (brush, pad) to the working surface. Having wheels on the ground during operation also allows for better maneuverability of the machine (e.g., the machine can be moved forward, backward) without technical expertise or user's with limited strength and disabilities.

[0039] The distribution of weights 233 and configuration of bearing assembly 240 provides for desired rotational and oscillatory motion. With a one horsepower motor, a rotation of 1,725 revolutions per minute (RPM) can be achieved while also inducing a 1,725 RRM oscillations having a 3/8 (plus or minus 1/4) inch diameter. (Note that driver 150 rotates at 80 RPM.) Figure 3 illustrates one desirable oscillation pattern. [0040] Figure 4A illustrates a possible embodiment of a modular surface cleaning apparatus 400, which can comprise handle assembly 460, circular driver base 413, and removable driver motor 410 coupled to circular driver base 413. Handle assembly 460 preferably comprises one or more vertical grips 465 by which a user can control or move apparatus 400. Note that vertical grips 465 are orthogonal (e.g., vertical) to a plane defined by the main struts of handle assembly 460 as opposed to laying within the same plane as in traditional approaches. Handle assembly 460 preferably pivotally couples to driver base 413 via lever arm 490. Pivotally coupling base 413 at one end of arm 490 allows base 413 to rotate into a cleaning position or a maintenance position. [0041] Apparatus 400 can also include a replaceable bottle cartridge system 470 that allows users to quickly and easily swap out pre-mixed fluids. Additionally, apparatus 400 can include one or more removable sprayers 477 mounted to base 413 where the fluids are provided from the bottles via pump 475, located beneath cartridge system 470 between struts of handle assembly 460. [0042] Lever arm 490 preferably comprises elbow 493 where handle assembly 460 pivotally couples to the arm. At a first end, based 413 can also pivotally couple to arm 490 via coupling ear 491. Lever arm 490 also has a second end where axel 495 couples to arm 490.

[0043] Apparatus employing the disclosed features can be obtained from Hruby Orbital Systems (http://www.hos-usa.com) of San Diego, California. [0044] Figure 4B illustrates floor cleaning apparatus 400 in operating cleaning position 481. Handle assembly 460 pivots on an elbow of lever arm 490. Driver base 413 is pivotally coupled to an end of lever arm 490 allowing base 413 to operate in horizontal cleaning position 481 while handle assembly 460 can change positions freely.

[0045] Handle assembly 460 can also include locking lever 462, which can be disposed between the handle struts. Locking lever 462 allows a user to position handle assembly 460 into a desired working angle relative to a cleaning surface. Lever 462 preferably operates as a pull latch the catches on a sliding rod, which in turn holds handle assembly 460 into a set position.

[0046] Figure 4C illustrates floor cleaning apparatus 400 in vertical maintenance position 483. Lever arm 490 also allows driver base 413 to flip up into vertical maintenance position 483 to allow a non-technical user to replace pads. As shown, in some embodiments, driver base 413 can include driver 450 having a hook-and-loop pad fastener 451. Pad fastener 451 holds cleaning pads firmly on driver 450. One should note that handle assembly 460 is able to retain its position during a maintenance operation. [0047] Figure 4C provides a better view of the position of pump 475. Pump 475 can be disposed below bottle cage mount 471 in between cross bars of handle assembly 460. As illustrated, bottle cage mount 471 can mount one to a cross bar of handle assembly 460. Cage mount 471 could also be mounted directly to the struts of handle assembly 460.

[0048] Figure 4D presents a user's view of floor cleaning apparatus 400. A user can easily grip vertical grips 465 disposed on handle assembly 460. Vertical grips 465 provide for a more natural interaction with apparatus 400 and reduce user fatigue. Grips 465 can also include one or more of actuators 417 to control apparatus. For example, actuators 417 can toggle power to driver motor 410, operate pump 475 to spray liquid from a bottle disposed in cartridge system 470, adjust oscillation rate, or other operating parameters of apparatus 400. [0049] Figure 4E illustrates the collapsible nature of apparatus 400. In the example shown, handle assembly 460 includes a hinged connector 467 allowing a portion of handle assembly 460 to fold back against itself through an angle of about 180 degrees. Thus, apparatus 400 can be folded down in a manner where its maximum dimension is no more than 30 inches (76.2 centimeters). [0050] One should note that the various elements of the disclosed system (e.g., pump, bottle cartridge, motor, spray nozzles, pads, driver plates, etc.) can be field replaceable by nontechnical users.

[0051] Contemplated surface cleaning apparatus can include one or more of the following features: · The apparatus can transform from a non-spraying unit to a spraying unit. A spray system can be attached to or removed from the apparatus through a mounting system comprising of a small number of mechanical fasteners. The bottle cartridge system allows for the changing of premixed solution bottles quickly thus eliminating spills and reduces overall weight of apparatus for lifting and storage.

Contemplated spray systems allow for creating an equal flow pattern that can be applied directly to a floor area. Such an approach reduces solution streaks that cause uneven dry patterns.

The spray system can also include a flow control system that controls the flow rate. Flow settings can range from off, to a dribble, or up to 1 gallon per minute.

The system can fold down to 30" (plus or minus 6") in height which makes the apparatus easy to transport and store.

The driver base can flip up for quick and easy pad changing.

The apparatus can support different drivers. For example, a 17 inch apparatus can quickly and easily be converted to a 19 inch and 21 inch apparatus, and vice versa - a 21 inch version can be converted to a 17 inch or 19 inch apparatus. One apparatus fits all driver options.

Contemplated apparatus can include large wheels (e.g., 10 inch diameter) wheels for overcoming any type of staircase, steps, curbs, holes, and or other obstacles in its path.

The apparatus can be manufactured with a weight of less than 85 lbs.

The vertical handle grips provide for easy operation and lower back stress relief.

A one horsepower universal 1 10V/60 Hz. - 220V/50 Hz. motor can be configured to operate as the driver motor to deliver over 1700 oscillations per minute.

An electrical cord can be included that can be easily removed.

Valve System for Removing Air from Pump Lines

Cleaning Pad Configuration: Cotton, Polyester, Bamboo • Removable Cleaning Liquid Management System with Vibration Isolation

• Extension Plug(s)

• Shaft Support for Drive Shaft

• Glider System for Friction Adjustment of Cleaning Pad

• Motor Modifications

• Misting System to Prevent Pad Saturation

• Brush Pads

• Heater System

• Hinge System

[0052] Some of these features will now be discussed in more detail. Valve System for Removing Air from Pump Lines

[0053] An orbital floor cleaner can include a three way port valve system to maintain and manage flow from a cleaning tank to a cleaning head via a pump system. The value can include a lever capable of redirecting flow in the line. When the lever is toggled, air trapped in the pump or solution line can be directed back through a return line into the tank by running the pump for a few seconds. Returning the lever back to an original position allows for solution to be directed back to spray nozzles.

Cleaning Pad Configuration for Carpeted Surfaces: Cotton, Polyester, Bamboo

[0054] Orbital floor cleaners fail lack properly constructed cleaning pads capable of efficient soil extraction yet allowing for proper maneuverability. Known cleaners require the operator to overcome resistance of a pad as it cleans. A preferred cleaning pad comprises a mix of materials that provide for excellent soil extraction while reducing friction so that the operator does not become overly fatigued. Preferred pads comprise a mix of cotton, polyester, and bamboo fibers. Pads preferably have a mix of materials by weight as follow: from about 0% - 20% cotton, about 40% - 65 % polyester, and about 35% - 40% bamboo. Bamboo fiber (vicose) provides desired cleaning properties while also reducing friction. Furthermore, pads have bamboo fibers having an average length between 0.01 inches to 1.0 inches can achieve proper function. In other embodiments the pad comprises cotton and polyester.

[0055] Another possible clean pad configuration can comprise the SuperZorb™ pad offer by Hruby Orbital Systems. The SuperZorb pads are 1300 GSM (plus or minus 400) having a pile of yarn. Preferably the yarn comprises a 2 ply yarn in a blend of about 40% polyester and 60% cotton on a base of content (plus or minus 10% for each materal). Preferred yarn count is 2/7.

Removable Cleaning Liquid Management System with Vibration Isolation

[0056] Orbital floor cleaners produce quite a bit of vibration, which can cause undesired movement of various attached parts. Vibration can be quite severe especially for removable attachments including solution bottles, pumps, or other parts. A preferred cleaner comprises a cleaning solution cartridge system having a cage mounted on handles of the cleaner. The cage can be sized and dimensioned to hold a cleaning solution tank. The cage can include a tank receiving opening. The cage can further include one or more narrowed portions (e.g., pinch points) configured to grip the tank and hold the tank in place during operation. The system can further include a tank cap having input/output lines that can be moved from tank to tank. As the cleaner operates, the narrowed portions of the cage hold the tank firm and the tank cap hold the input/output lines in place. When a tank is empty, the entire tank can be replaced or refilled as desired. [0057] Figure 4F illustrates a top view of bottle holder frame 472. Frame 472 has protrusions 473, which hold bottle cartridge 470 in place during operation of cleaning apparatus 400. Frame 472 is sized and dimensioned to snuggly fit around cartridge 473. Protrusions 473 form a pinch point for cartridge 470. To load bottle cartridge 470 into its frame, a user must angle a bottom corner of cartridge 470 into frame top 472 first and then align the body of cartridge 470 with frame 472 while pushing cartridge 470 into frame 472.

[0058] The tank cap can also include a breather valve, which allows sir to be drawn into the tank as the pump sucks solution out of the tank. Under such a circumstance, the tank retains its shape, does not collapse, or does not vibrate within the cage of on the machine. Extension Plug(s)

[0059] Orbital floor cleaners typically have long extension cords to allow for long distance use from an outlet. In many situations an operator often finds they must use an additional power tool at the cleaning site. However, no outlet socket is available. Preferred floor cleaners include an extension plug capable of providing electrical power to power tools. In addition, preferred cleaners also includes a quick connect extension cord. One can simply twist together sockets in a clockwise motion to fasten the cords together, or untwist in a counter clock wise motion to unfasten the cords.

Shaft Support for Drive Shaft

[0060] Orbital cleaners comprise a drive shaft coupling the motor of the cleaner to the pad driver element. Unfortunately, due to the orbital motion, the drive shaft can become worn due to vibration. A preferred cleaner comprises a shaft support configured to allow for vibration when attached to a cleaning pad (see section labeled: Cleaning Pad Configuration: Cotton, Polyester, Bamboo). Contemplated shaft supports comprise a shaft support configured to shroud and reinforce the drive shaft against stresses resulting from vibration of the orbital assembly during use.

[0061] Shaft support 120 comprises a cylindrical member that has a through hole extending axially throughout the length of the cylindrical member. The through hole is axially aligned with the cylindrical member with a high degree of precision. The cylindrical member also has a flanged end. The flange extends circumferentially from the cylindrical member at a 90 degree angle with a high degree of precision. The length and outer diameter of the cylindrical member, the inner diameter of the through hole, the diameter and thickness of the flange, and the material composition of shaft support 120 is not mere design choice. These parameters are carefully selected to provide sufficient support and reduce vibration in the cleaning apparatus, while still allowing the driver and the brush pad to have a desirable amount of flexibility.

[0062] From a methods perspective, the present inventive subject matter comprises providing a motor drive shaft and conditions in which the motor drive shaft will be used (e.g., carpet vs hardwood), selecting parameters for a shaft support, and ascertaining vibration and performance (dirt extracted, agitation forces, etc.) in the cleaning apparatus. The method can further include the step of re-selecting parameters and re-ascertaining vibration/performance in an reiterative manner in order to provide an acceptable shaft support. The selection of shaft support parameters achieves a sufficiently close tolerance fit between the motor drive shaft and the shaft support such as to eliminate lateral migration of the orbital floor cleaning apparatus on the work surface under cleaning conditions. In preferred embodiments, the orbital cleaner travels less than 1 foot per 30 seconds, more preferably less than 6 inches, most preferably less than 2 inches. Once the shaft support has been selected, the method can include an additional step of coupling the shaft support to the motor drive shaft.

[0063] Close tolerance fit between the motor drive shaft and the shaft support is meant to include (1) axial fit to reduce axial wobble of the shaft support around the motor drive shaft, (2) flange wobble around a hypothetical 90 plane intersecting the rotational axis of the motor drive shaft, (3) vertical slip between the motor drive shaft and the shaft support.

Glider System for Friction Adjustment of Cleaning Pad

[0064] Preferred cleaners comprise a glider system comprising at least two gliders. As an example, considered the Orbot cleaner. Gliders for the Orbot cleaner would include two gliders each measuring 8" in diameter. A first glider can be 1/16^Λ inch thick and a second glider can be is 1/8^Λ inch thick. Both gliders can have a hook fastening system on one side that coupled with a cleaning pad. The gliders reduce the amount of friction between different carpet types and the cleaning pads, allowing the operator to maneuver the cleaner with more ease if necessary. Such a configuration cooperates with the disclosed pads as discussed above.

Motor Modifications

[0065] Typical orbital cleaners utilize off the shelf motors, which causes undue stress on the machine because each machine has a different configuration. Consequently, a common motor that might work for a first machine would unlikely work for a second machine due to differences in weight distribution. Preferred motors have numerous characteristics that surprisingly reduce vibration. For the example shown in Figures 1 and 2, the motor has the following characteristics:

• 378^th - 24 inch pin length of 0.900 ± 0.05

• Shaft length of 1.6 inches from C-face base • Shaft diameter of 0.625 inches

• Motor weight of 27 pounds ± 1 pound

• 1725/1451 RPM, counter clockwise rotating motion, 56C frame, TEFC, 50/60 Hz, 100V - 230V Misting System to Prevent Pad Saturation

[0066] Typical orbital floor cleaners inject cleaning solution through an upper surface of a cleaning pad. Such an approach causes the cleaning pad to become saturated and have reduced efficiency when cleaning. A preferred cleaning system comprises a spray system having one or more nozzles that direct a mist of cleaning solution directly on to a surface to be cleaned in front of the machine. Such an approach provides for even coverage under control of an operator, efficient soil extraction from the surface, or reduced drying times for carpets. In some embodiments, the spray nozzle arms can maneuver up, down, left, or right to allow the operator to adjust his cleaning speed, spot cleaning, or other types of spraying needs when cleaning different types of floors. Brushes

[0067] Figure 5a and 5b illustrate a possible embodiment of a brush pad 500. Beyond buffing or cleaning pads, an orbital floor cleaning system can also utilize one or more brush pads. Preferred brush pads use small diameter bristles (e.g., less than 0.03 inches, or about 0.02 inches) so that pores, crevices, grout lines, or other surface features can be cleaned efficiently. Bristles preferably comprise a stiff material (e.g., nylon 6-12) where bristles, in aggregate, bear the weight of the cleaners while also provide efficient cleaning tips.

Furthermore, preferred brush pads have bristles oriented at various angles in concentric rings about the brush pad. Each ring can have bristles oriented at increasing angles to a neighboring ring. [0068] Referring to Figure 5 a, one can see a brush pad can include multiple concentric rings of bristles where the pad has at least three, and more preferably at least seven rings. One should note that each group of bristles in each ring can have different bristle length relative groups in other rings. In the example shown, the outer ring of bristles have a length about of about two inches where the inner most row has bristle length of about 1.3 inches. The following table provides the parameters of the illustrated brush pad. Ring Bristle No. of No. of Angle of Dist. from Pad

Length (in) Bristle Bristles in Bristle Group Edge to Center

Groups Group (degrees) of Group (in)

1 2.0 + 0.2 83 40 + 5 60 + 10 0.250 + 0.2

(Outer most)

2 1.4 + 0.2 79 70 + 5 60 + 10 0.875 + 0.2

3 1.3 + 0.2 75 70 + 5 60 + 10 1.50 + 0.2

4 1.3 + 0.2 40 70 + 5 75 + 10 2.00 + 0.2

5 1.3 + 0.2 36 70 + 5 75 + 10 2.75 + 0.2

6 1.3 + 0.2 30 70 + 5 90 + 10 3.25 + 0.2

7 1.3 + 0.2 16 70 + 5 90 + 10 3.75 + 0.2

(Inner most)

[0069] Although the above table provides a very detailed view of a possible brush pad, one should appreciate variation around the parameters is also contemplated. The angles, number of groups, number of bristles within a group, number of rings, or other factors can be varied. Still, one should further appreciate that such factors are more than mere design choice. The angles, bristle material, placement of groups, or other parameters are selected to achieve desire cleaning efficiency.

[0070] The illustrated brush pad has an outer diameter of about 15 inches and comprises 3/8^Λ inch PVC. The pad is mounts to the cleaners counter weights via one or more mechanical fasteners (e.g., four 1/4^Λ inch screws). Heater System

[0071] Preferred orbital cleaners comprise a removable heater cartridge. The heater cartridge can include a high watt heater and positioned near a cleaning solution tank. As the system draws solution from the cleaning solution tank, the heater cartridge can heat the solution before the solution is sprayed on to the floor. Additional Features

[0072] The base can include a bumper with a resting block, which can be considered a bumper foot. The bumper foot allows an operator to flip up the base and rest the base in a vertical position allowing the operator to change out pads, scrub brushes, or any other accessory from the driver plate. [0073] The driver plates can also include hook and loop fastener (e.g., Velcro®) driver plates. The driver plate allows the operator to change the hook and loop fastener plates when the plates wear out. Changing out these plates ensures the cleaning pads (e.g., SuperZorb pad, etc.) are driven by the driver at a desirable production rate. The plates are can be about 1/16" thick, about 15" in diameter, made from ABS plastic, and can be mounted with 8 pes of 1/4" screws. Changing the weight, dimensions, or other aspects of the plate designs will cause the orbital drive to operate with less than desirable efficiency, therefore the machine will not perform smoothly and accurately.

[0074] An actual driver plate that fastens to the hook and loop fastener driver plates play an assisting role in balancing the orbital drive and will also aid in making the machine operate properly. Drive plates can be made of 3/8" thick PVC and are about 15" in diameter. The actual driver plate can mount to the orbital counterweight directly with 4pcs of 1/4" screws. [0075] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the spirit of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C .... and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.

Claims

1. A cleaning apparatus comprising:

an orbital cleaning assembly having a driver base;

a spray assembly coupled to the orbital cleaning assembly and configured to dispense a cleaning solution;

wherein the spray assembly includes a first nozzle positioned to spray the solution to an area adjacent to the driver base; and

an absorbent pad configured to couple with the driver base.

2. The cleaning apparatus of claim 1, wherein the absorbent pad comprises a disk-shaped arrangement of material.

3. The cleaning apparatus of claim 1 , wherein the absorbent pad is composed of:

up to about 60% cotton; and

about 40% polyester.

4. The cleaning apparatus of claim 3, wherein the bamboo fiber comprises an average length between 0.01 inches and 1.0 inches.

5. The cleaning apparatus of claim 1, wherein the orbital assembly includes at least one extension plug.

6. The cleaning apparatus of claim 1, further comprising a return valve system.

7. The cleaning apparatus of claim 6, wherein the return valve system comprises:

a three way valve having three ports:

a first port fluidly coupled with a container configured to store a cleaning solution;

a second port fluidly coupled with a pump, and

a return port coupled with the container; and

wherein activation of the valve closes a coupling between the first port and the second port, while opening a coupling between the second port and the return port.

8. The cleaning apparatus of claim 1, further comprising a cleaning bottle retention system.

9. The cleaning apparatus of claim 8, wherein the retention system comprises: a frame sized and dimensioned to receive a container, the frame having one or more pinch zones defining a receiving space that has a smaller area than a cross- sectional area of the container.

10. The cleaning apparatus of claim 1, wherein the first nozzle is removably coupled to the driver base.

11. The cleaning apparatus of claim 1 , wherein the spray assembly further includes a second nozzle removably coupled to the driver base.

12. The cleaning apparatus of claim 1, further comprising a brush pad.

13. The cleaning apparatus of claim 12, wherein the brush pad comprises:

a main body;

a plurality of bristles disposed on the main body and forming a plurality of rings, each bristle forming an angle with the main body; and

wherein the angle formed by each of the plurality of bristles is a function of location and increases the father a bristle is located from an innermost ring.

14. The brush pad of claim 13, wherein the bristles have a diameter of less than 0.03 inches.

15. A method of reducing in-operation migration of an orbital floor cleaning apparatus, comprising:

providing a motor drive shaft that is configured to drive a driver for orbitally moving the driver on a work surface;

selecting a shaft support comprising a cylindrical member, a through hole extending axially through the cylindrical member and axially aligned with the cylindrical member, and a flange circumferentially extending from an end of the cylindrical member;

wherein the step of selecting is performed such as to achieve a sufficiently close

tolerance fit between the motor drive shaft and the shaft support such as to eliminate lateral migration of the orbital floor cleaning apparatus on the work surface under cleaning conditions; and

coupling the motor drive shaft to the shaft support.

16. The method of claim 15, wherein the step of coupling motor drive shaft to the shaft support is performed by press-fitting.