MXPA97007199A - Toothbrush with better effectiveness - Google Patents

Abstract

The present invention relates to a toothbrush comprising a head part and a handle part connected thereto along a longitudinal axis, the head part has a brush means thereon, wherein the part The handle is formed of a thermoplastic material, and wherein the head part has a first distal region of the handle part, a second region next to the handle part and a perimeter surrounding the head part where the brush means comprise: (a) a first brush area on said first region distal to said handle portion, said first brush area includes an outer brush perimeter region at the free end of said head portion, said outer brush perimeter region being arranged in an arched pattern on said free end and also defining an interior area on it in which a densely packed inner brush area is located; and (b) a second brush area on said second region proximal to said handle part, said second brush area contains alternating rods and rows of interproximal bunches which are oriented essentially transverse to the longitudinal axis, wherein said rows of interproximal bunches terminate at a selected one of the group consisting of gum line bristles that extend laterally outwardly and gum line bars that extend out laterally.

Description

TOOTHBRUSH WITH IMPROVED EFFECTIVENESS Background of the Invention 1. Field of the Invention The field of oral hygiene has taken exceptional steps to improve general oral health. Various formulas of toothpastes, mouthwashes, tooth washes, rinse aids with water and toothbrushes are on the market, and each, to a certain extent, contributes to oral hygiene in general when used properly and properly. regular.

However, the problem frequently encountered is the proper use and regularity of use. Even though toothpastes taste better than ever before, and many mouth rinses promise fresh breath, the foundation for proper hygiene in the oral cavity is the removal of waste from the teeth, in the gum line and between teeth. In addition, the innermost reaches of the oral cavity are regularly where the problems begin.

Therefore, there has been and continues to be a need for a toothbrush which satisfies many categories: - it must provide effective surface area cleaning, including the top of the tooth crown and the front planar portions.

- This should provide cleanliness in the gum line, where waste often accumulates outside the scope of the normal action of cleaning the tongue.

- This should provide effective cleaning between the teeth.

- This must be able to reach the most confined regions of the oral cavity easily. - it must be able to direct the force on the teeth and on the surfaces individually, while simultaneously allowing the brushing of large surface areas.

- This should provide a convenient and convenient use to the one who brushes.

- This must effectively remove the plate. 2. The Prior Art Prior art is aware of several elements of toothbrushes which try to remedy the situation and make brushing the teeth by the user more comfortable and more effective. Certain toothbrushes currently on the market provide an angled head, which is said to be similar to dental instruments, to reach the back teeth. Angled adjustable heads are described in British Patent GB 216,735. Other toothbrushes use different types or lengths of bristles to achieve a step effect that is said to improve the effects of brushing in general. See, for example, United States Patent No. 1,794,711 issued to Jacobs, 2,618,003 granted to Robey and 3,742,549 granted to Scopp which provide bristles of varying length for an angled effect. British Patent No. 216,735 and United States Patent No. 1,676,703 issued to Nuyts describe a bunch of longer bristles at the utilization end in their drawings.

Patents of the United States of America Nos. 1,527,853 granted to Ferdon, 1,497,495 granted to Finke and 1,456,535 granted to Cart right each describes an arrangement of contoured bristles.

However imaginative these arrangements may be, there is still a need for a toothbrush which provides all the features required for proper oral hygiene.

II. Synthesis of the Invention The present invention relates to a novel toothbrush with exceptional cleaning efficiency and comfortable use. More particularly, this invention relates to a toothbrush having its body shaped for maximum cleaning efficiency under a variety of conditions of use, and having bristles thus arranged to be highly effective in removing the plaque from the teeth with a manual brushing.

According to the practice of this invention, the handle and the head part of the toothbrush body are formed by a variety of processes. The body is formed with a uniquely ergonomic handle which provides a secure grip for the user.

The toothbrush according to the present invention also includes a head design which has hitherto been unknown. The head of the toothbrush is formed essentially thinner than what has been customarily done, and the longitudinal support bar is provided to maintain a resistance to bending under pressure. In a preferred embodiment, the head of the brush is tapered to a narrow part, and then optionally flares out again. In another preferred embodiment, the head is formed with a wavy appearance. In an especially preferred embodiment, the head itself has an upwardly arched lip. The head can also have a lower part to massage the gum. In a preferred practice of the invention, the head of the toothbrush is formed so as to segment the head for different areas of use.

Additionally, the toothbrush according to the present invention is provided with single-choice bristle arrangements. In a preferred embodiment, the generally transverse rows of bristle rods alternate with rows of generally transverse bristle bunches to provide exceptional plate removal in the surface area. In this regard, see the description in U.S. Patent No. 5,335,389 to Colgate-Palmolive, issued August 9, 1994, which is incorporated herein by reference. As taught there, bunches of bristle bars can be replaced with rows of individual bunches, but in such a case, the efficiency of the toothbrushes of the present invention will be decreased. In another preferred embodiment, the bristles project outwardly around the perimeter of the brush head to reach and clean the gum line simultaneously. This results in a uniform cleaning action essentially independent of the technique or direction of brushing. See also U.S. Patent No. 5,341,537 to Colgate-Palmolive issued August 30, 1994, which is hereby incorporated by reference in its entirety.

In yet another embodiment, solid or essentially packed circular cleaning means are formed in a dense form in the center of a first bristle area on the end of use of the brush head for cleaning the individual teeth. A gum masseuse can also be incorporated into this end of the toothbrush. In a particularly preferred embodiment, cleaning means in the form of a hand shovel are formed to remove accumulated debris. The applicant has also determined that varying the length of sows in these specific arrangements is unexpectedly beneficial.

According to the present invention, the number of bristles themselves has been altered, with surprising consequences. By providing longer overall bunches with more bristles, the size of the head has been lowered, but nevertheless the cleaning force has been improved. A rubber bristle rod in the practice of the present invention provides a rubber brush action that removes the debris released by the regular bristles.

Detailed Description 1. Brief Description of the Dibulos Figure 1 is a side view of a toothbrush head and handle part formed in accordance with this invention.

Figure 2 is a bottom view of a head and handle part of the toothbrush formed in accordance with this invention.

Figure 3 is a top view of a part of the head and handle of the toothbrush formed in accordance with this invention.

Figure 4 is a bottom view of a rubberized handle embodiment of the present invention.

Figure 5 is a top view of a rubberized handle embodiment of the present invention.

Figure 6 is a side view of a rubberized handle embodiment of the present invention.

Figure 7 is a side view of a preferred angled head embodiment according to the present invention.

Figure 8 is a side view of a preferred arched head embodiment according to the present invention.

Figure 9 is a side view of a highlighted head embodiment according to the present invention.

Figure 10 is a side view of a partially highlighted head embodiment.

Figure 11 is a side view of an angled and highlighted head embodiment.

Figure 12 is a side view of a free formed head embodiment.

Figure 13 is a top view of a used head embodiment.

Fig. 14 is a top view of a tapered head embodiment with rounded edges.

Figure 15 is a top view of a tapered head embodiment with a rounded tip.

Figure 16 is a perspective view of an array of bristles according to the present invention.

Figure 17 is a perspective view of an array of bristles according to the present invention.

Figure 18 is a perspective view of an array of bristles according to the present invention.

Figure 19 is a side view of an arrangement of a head-bristle combination according to the present invention.

Figure 20 is a perspective view of an array of bristles and head according to the present invention.

Figure 21 is a side view of a head-bristle combination arrangement according to the present invention.

Fig. 22 is a side view of a head-bristle combination according to the present invention.

Figure 23 is a side view of a head-bristle combination according to the present invention.

Figure 24 is a perspective view of a head and bristle arrangement having a gum stimulator according to the present invention.

Figure 25 is a side perspective view of a mode of a complete toothbrush according to the present invention; a more detailed head arrangement of which is shown in figure 27.

Figure 26 is a partial perspective view of an array of bristles according to the present invention.

Figure 27 is a top plan view of an array of bristles according to the present invention.

Figure 28 is a top plan view of an array of bristles according to the present invention. 2. Detailed Description with Reference to Drawings The toothbrush according to the present invention has a combination of novel features which gives an exceptional cleaning efficiency combined with a high level of comfortable use. This comfortable arrangement is made possible by a novel handle shape, while the efficiency is improved by a novel head and bristle structure as detailed more fully here. In some figures, similar elements will be denoted with the same reference numbers.

The ergonomics of the toothbrush handle have been largely ignored. As daily experience shows, toothbrushing occurs under wet conditions, even in the shower, and not all toothbrushes currently available, which are made of rigid plastic materials and can slip when wet, provide a prevention against the slipped. The vigorous use of the toothbrush in the oral cavity without full control over a toothbrush handle can result in injuries not limited to the stabbing of the gum due to improperly placed bristles. The oral cavity is very delicate, and injuries to it are extremely painful, especially when those lesions are repeatedly performed.

Figure 1 details an aspect of the present invention that solves the problem of slipping. The body of the toothbrush 30 is formed with a handle portion 32, a grip portion 34, a neck portion 36, and a head portion. 38. The body is formed by any one of a variety of measures which are known in the art, such as setting or injection molding an appropriate thermoplastic material.

The handle portion 32 is essentially straight, and is useful for storing the brush in a normal toothbrush holder. The gripping part 34 is formed with a first gripping part 40 having multiple protuberances 42, preferably at least three protruding from the body of the handle.

The thumb of a user rests securely within at least one of the indentations 44 formed between the protuberances. This allows the brush to be kept in the position of the bristles upwards and applied to the surface of the teeth surely without fear of a slip. When the toothbrush is used in the position of the bristles down to clean the lower teeth, the multiple indentations provide finger rests, and the multiple protuberances provide finger elements to prevent slipping. The toothbrush can be inverted during brushing (for example the position of the hand does not change, but the orientation of the brush is reversed to clean the opposite set of teeth). No loss of grip occurs.

The second grip portion 46 is also formed in the grip area 34, but this is formed on the opposite side of the body of the grip region from the first grip portion 40. The second grip portion 46 is formed with minus two indented curvatures 48 and 50. The proximity of the indented curvatures 48 and 50 results in a lower protuberance 52. The lower protrusion 52 acts in a manner similar to the upper protuberances 42, and gives the fingers engaged with the same capacity for a lateral movement without slipping.

The neck portion 36 is generally formed with an angled portion 54. This angle allows the head to be more appropriately positioned within the mouth to engage the bristles correctly against the teeth.

The head part 38 is formed substantially thinner than that of conventional toothbrushes. This thinness results in a lower head profile, giving added aniobrability within the oral cavity and access to difficult places to reach there. The support beam 60 (see Figure 2) provides a flexure support for the head 38 without requiring the height of the general head part to increase substantially.

Figure 2 more clearly shows the underside of the brush body according to the present invention. The neck portion 36 is essentially thinner than the handle portion 32 or the grip part 34. The neck portion tapers to a point 58 to form the head support beam 60. Figure 3 shows the top view of the same. Figure 4 illustrates a particularly preferred embodiment of the lower part of the brush handle of the present invention. The handle part is formed with a lower elastic grip material 62 which allows the handle to be secured securely. The elastic grip material may be rubber, rubber type (for example "Santoprene") or a suitable deformable thermoplastic material which is formed in a thin layer. Although the elastic material can be fastened with an appropriate adhesive, in a preferred manner, it can be matched to the rigid plastic by an injection molding process.

Fig. 5 illustrates the upper part of the brush handle of Fig. 4. The upper elastic grip material 64 is formed in the front portions of the indentations 44 providing excellent traction and a secure grasping ability for the hooked fingers.

Figure 6 illustrates a side view of the rubberized handle according to the present invention. The upper elastic grip material 64 is visibly adhered to the front of the indentations 44. The lower elastic grip material 62 is adhered to the lower grip part. Such combination gives a firm and secure grip with moderate exercise and even under humid conditions. Such a comfortable and safe grip has the added benefit of avoiding an injury with accidental brushing, while concurrently it makes brushing more pleasurable and encourages its use more regularly.

Figure 7 is a side view of an angled head part according to the present invention. This acts to provide either raised bristles up, or lower the head profile to allow greater access to the back of the oral cavity. The angled head part 66 is connected by the angle 68 formed in the head portion of another planar manner. The support bar 70 can extend outwardly to the angle to provide head support and greater resistance to angular movement.

Figure 8 illustrates a mode of a non-planar head part. The head is formed with a curved part 72 which again reduces the spacing required by the head part and can also reduce the incidence of a direct gum blow by an inflexible head part. The curve will cause the head to strike a less destructive blow to delicate gum tissues.

Figure 9 illustrates an embodiment of the head with a highlighted part 74 which may be convex to the head surface. This allows the bristles to extend outward, provide additional bending support and can give the bristles a contoured appearance.

Figure 10 illustrates one embodiment of the present invention. A part 76A of the head is raised. This acts to reduce the head clearance at the utilization end to provide greater access.

Figure 11 illustrates a combination of an angled and raised head utilization end 76B.

Figure 12 illustrates a head of low profile and extremely friendly to the gum. The so-called free-formed head is flexible, can navigate in the most closed parts, and causes very little injury to the oral mucosa that can be found. The free formed head is formed with a thin outer perimeter 78 and is supported by the support beam 82, optionally formed with the internal channel 80.

Figure 13 is a top view illustrating the preferred tapered head embodiment which has a narrower point 82. A tapered head provides excellent areas for hard-to-reach portions of the oral cavity from an angle. The tip can oscillate and rotate more freely than a full-size tip. This has the unexpected additional benefit of concentrating the brushing force in an appropriate direction.

Fig. 14 is a preferred embodiment of Fig. 13 having the curved flared sides 84. This provides more head surface area, and still allows the tapered head an improved access essentially inside the oral cavity.

Fig. 15 is another embodiment of the head having a rounded end portion 86. This rounded end portion can support a rounded bristle pattern and concentrate the brushing force in specific areas within the mouth. The indentations 88 delimit the rounded end portion of the tapered sides 90.

Figure 16 illustrates a first preferred array of bristles of the present invention. As previously discussed, the brush head is narrow and thin (in the sense of height) providing easy access to the oral cavity. The most preferred thickness for the head is around 3 millimeters.

The special bristle arrangement is characterized by a bristle rod or bunch of large hand shovel 86 provided at the head end of the head (the end furthest from the neck portion of the handle). The large hand shovel bunch 86 can optionally be tilted out at an angle of about 2 to 8 degrees, preferably about 3 degrees. The handle shovel 86 reaches behind the back teeth and helps remove plaque and food materials that might otherwise be left by a conventional brush.

Surrounding each lateral edge of the head are a plurality of, preferably three to eight, more preferably five, bundles of large gum line 88. Gum line bundles are optionally in the form of bunches of single bristles, or more preferably in the form of a rod-type arrangement of bristles. The perimeter bristle line bunches 88 are preferably elongated oval shaped bunches and can also be made of rubber or a rubber type material.

The interior of the brush head is formed with bars of alternating bristles 90 and interproximal bunches 92.

The bristle rods 90 and interproximal bunches 92 are generally aligned transverse to the longitudinal axis of the brush head. In the most preferred embodiment, the bristle rods 90 are shorter than the bristle bunches 92 allowing the bunches of bristles 92 to engage the interproximal spaces between the teeth, and the bristle rods 90 to brush the waste from the surface of the bristles. teeth. The bristle rods 90 can be made of a standard bristle material or a rubberized material. This unique combination of elements gives an exceptional cleaning force in a compact head space. The perimeter of the head is provided with gill line bristle bars 88 even when such bars 88 can be replaced with individual bunches as in Figure 17.

It is speculated that this cleaning force is partly due to the smaller open space between the bristles. More specifically, the greater concentration of specialized active bristles in a small space is believed to be more effective than the more conventional broad and open placement of the bristle bunches. Preferably, the number of bunches of bristles or bars on the head is below 30.

Figure 17 illustrates another embodiment of the present invention. The bristle bars 94 formed of a solid or densely packed wall of bristle or filament material or of a rubber, rubber or thermoplastic material type, alternates with the bundles of interproximal bristles 96. The bars 94 are again short that the bunches, as to allow the interproximal bunches 96 to penetrate between the bars and the teeth 94 to remove waste from the surfaces of the teeth. The bars 94 and the bunches 96 are oriented generally perpendicular to the longitudinal axis of the bristle head. Bars 94 and bunches 96 are preferably formed with a slightly arched curve, which aids in the removal of debris. The perimeter of the head is provided with bundles of gingiva line 98, which are slightly angled outwards. The gingiva bundles are preferably angled outwardly from about 2 to 5, preferably about 3 degrees. These bundles act to clean the debris from between the surfaces of vertical teeth and the gum line.

The head is formed with a rounded tip 100 having the perimeter bristles 102. The perimeter bristles are preferably angled slightly outward, again by about 2-5 degrees, preferably by about 3 degrees. The rounded tip is also provided with a solid or densely packed central bundle 104 which can optionally be replaced with a rubber masseur. The rounded tip bunch arrangement 102 surrounds the teeth, while the central bunch 104 cleans between the teeth and in the gum line.

In this embodiment, the indentation 106 where the tapered head meets the rounded tip, clearly defines two different use parts. The front tip part acts to forcefully clean specific areas, while the rest of the head part acts to clean the teeth in a wider brush style, cleaning surfaces, gums and between teeth in a more traditional style . The toothbrush with different action or use segments provides an exceptional tool for the consumer, allowing a more complete cleaning job than what has been possible until now. When combined with the grip properties of the mango of the invention, the general toothbrush is a valuable addition to the consumer's arsenal against oral disease.

Figure 18 is a perspective view of a particularly useful embodiment of the present invention. The head is formed with a highlighted portion 108. The perimeter of the raised head portion 108 is provided with the bristles 110 angled outwardly slightly by about 2 to 5 degrees., preferably around or exactly 3 degrees. These bristles act to form a cup around a tooth and clean it efficiently. The inner part of the raised head part is provided with bunches of shorter and denser packed bristles 112 which act to clean the surfaces of the teeth. This highlighted tip concentrates the cleaning force without requiring increased brushing force and possible gum damage.

Figure 19 is a side view of Figure 18, illustrating the raised head portion 108. The support bar 112 is visible in this view, providing a torsional use and flex pressure against the support. The bristle rods 114, which brush the waste outwards, are clearly visible as shorter than the bristles of the gum line 116 that clean, inter alia, the groove area, which is where the teeth meet the line of the gums.

Figure 20 is a perspective view of a modality illustrating the wavy head. The head, instead of being flat or curved, is formed with a plurality of ridges 115 and valleys 117 which give the toothbrush the cross-sectional shape of a flattened wave. The tip portion 118 is on the final highlighted part, and is also angled about 6 degrees upward. A degree of elevation from about 0 to about 10 degrees is optimal. Also present are the transverse rows of the bristle rods 114 alternating with the transverse rows of the interproximal bristles 138, the rows of which end at their innermost ends with the angled ging line bristles 124.

The arrangement of bristles in this modality has a bunch or hand shovel of bristle bar of horseshoe shape of internal horse 120 to remove the waste. The inner blade is located in the middle of the pointed tip portion 118, and the pointed tip 118 acts in conjunction with the inner bundle 120 to effectively clean the surface of the teeth. The pointed tip portion 118 has a front perimeter which has a semicircular outer bunch arrangement 122. The outer bunch arrangement surrounds a tooth in the shape of a cup and cleans its vertical faces.

Figure 21 is a side view of Figure 20 which more clearly demonstrates the improved feeling properties that result from this embodiment. The bundles of bristles of the gum line 124 and the bristle rods 114 are formed of the same height of material, imparting a uniform and pleasant sensation to the toothbrush with the head design with waves. In conventional toothbrushes, such a wave effect is obtained by placing the bristles of different heights on the head. The bristles of different heights have different bending modules, and consequently do not bend uniformly.

This can result in uncomfortable and significant overlap of sows. In the present preferred embodiment, all the bristles are of the same height, all have a comfortable and uniform feel and will improve the brushing experience. In addition, the production costs for this design are essentially lowered since the bristles can be of the same supply length, and do not need to be of different lengths. This mode is given the most preferred elastic rubber layer 127. This layer protects the bristles and acts as a stimulator / massage.

Figure 22 illustrates a more preferred tip design. The pointed tip 128 is provided with the bristles 130 of uniform length, and the wearing end 132 has a low height compared to conventional brushes with elongated tip bristles. This improved design allows a user to reach behind the posterior teeth. In addition, bristles of the same height wear out better, more evenly, and give a longer toothbrush life.

Figure 23 is a different embodiment which has ends of utilization bristles of level 134 and an arched head 136. The bristles of tip 138 are shorter than the remaining bristles, giving an extremely low profile for difficult access, for example when orthodontic appliances are present in the mouth.

Figure 24 illustrates a very preferred array of bristles. The bristle rods 136 and the interproximal bunches 138 are staggered, with the rods 138 shorter in height than the bunches 138. The bunches of gum line bristles 140 are angled at a slightly outward angle, preferably from 1 to 15 degrees, more preferably around 12 degrees. The front tip part is formed with a central gum stimulator 142, formed of rubber or a rubber-like material or a dense mass of bristles. The front tip part is provided with a circular array of angled bristles 144 surrounding the gum stimulator 142. The circularly arranged bristles are preferably slightly outwardly angled, at an angle of from 2 to 5 degrees, preferably around 3 or exactly 3 degrees.

During the brushing action, a rubber gum massager can stimulate the gums and simultaneously act to polish the teeth.

Figure 25 is a perspective view of a complete brush according to the present invention and as shown more fully in Figures 26 and 27. The unique combination of elements makes this brush more attractive, highly functional, superior in effectiveness and Safer than conventional brushes.

Figure 26 shows a toothbrush head part according to the present invention which is particularly preferred. The bristle bars 154 are formed with a slightly arched shape which effectively removes waste from the surface of the teeth and directs it outwardly from the gum line. The bunches of interproximal bristles 156, similarly, are formed with a slightly arched shape to carry out the same function. The bundles of the perimeter of the gum line 158 are slightly angled outwardly, preferably from 2 to 10 degrees, more preferably around or exactly 6 degrees. The solid or densely packed brushing means 160 are located centrally on the tip portion of the brush. This can be a dental stimulator, a rubber bar, or a bunch of solid or densely packed bristles. The densely packed or solid brushing means 160 is surrounded by the tip perimeter bristles 162 which are at an angle of about 3 degrees. This thin head 164 is clearly visible.

Figure 27 is a top plan view of a more preferred embodiment illustrating the arcuate rows of the bristle rods 154 and the interproximal bunches 156, which terminate in the bunches of the bristle line 158. The bristles of the tip perimeter 162 join the frontmost arched row of the bunches of bristles to surround the solid or densely packed brush means 172.

Figure 28 is a top plan view of a more preferred embodiment illustrating the bristle bar hand shovel of "horseshoe" or "U" front shape, which acts to clean the debris of the individual teeth and Sweep the debris from the surface and out of the gum line.

Brushes according to the present invention may be manufactured from any one of several currently available technologies. The body itself, as noted above, can be molded by injection, in a single or multi-step process. Although certain bristles can be clamped as is conventional, bristle bars, shovels and other densely packed bristles should generally be clamped using a newer staple-free technology such as melting, thermoforming or injection molding. Injection molding is currently preferred. The fusion technology, by which the body of the brush is preformed and then softened, and the bristle bunches are melted and melted in the softened brush body are useful.

Injection molding was carried out in machinery which is known from the following patents, each of which is expressly incorporated herein by reference: U.S. Patent No. 4,430,039 issued February 7, 1984; U.S. Patent No. 4,580,845 issued April 8, 1986; U.S. Patent No. 5,143,425 issued September 1, 1992; and U.S. Patent No. 5,390,984, issued February 21, 1995.

Other useful techniques for securing the bristles to a body, such as thermoforming, melting, welding and the like are illustrated in the following patents which are expressly incorporated herein by reference: US Pat. Nos. 4,109,965 issued August 29. of 1978; 4,619,485 issued October 28, 1986; 4,637,660 issued January 20, 1987; 4,646,381 issued March 3, 1987; 4,892,698 issued January 9, 1990; 5,045,267 issued September 3, 1991; 4,988,146 issued on January 29, 1991 and 5,224,763 issued on July 6, 1993.

The staple-free grip results in a brush body without holes, where water can be collected and germs and bacteria can grow. More preferably the bristles are supplied to an injection mold, and the injection molding of the brush body around the bristles for a tight fit. The rubber grips can be injected by moideado on the body.

Other variants conceived by the applicant include a compact head version in which the head is not larger than 2.25 millimeters, where the head is essentially shortened. A complete head variant having a head of about 2.5 to 3.5 millimeters is also contemplated. The bristles of a variable length, supply, stiffness and thickness are all contemplated by the inventor.

Generally speaking, the present invention is directed to a toothbrush having a head part and a handle part connected along a longitudinal axis, wherein the head part has a first region distant from the handle, a second region nearby to the handle, and a perimeter surrounding the head. The head includes the brushing means, and the handle portion is formed of thermoplastic materials. The brush means include: a first brush area on the first region remote from the handle, whose first brush area contains an outer brush perimeter region surrounding a more densely packed brush area; and a second brush area on the second region close to the handle, whose second brush area contains bundles of alternating bristle sticks and individual bristles of bristles which are transversely oriented essentially to the longitudinal axis, and the rows of individual handles of the bristles end in the bristles or gum line bars that extend laterally outwards.

Other variants will become apparent to those skilled in the art having regard to the present disclosure.

Claims (38)

R E I V I ND I CAC I O N S

1. A toothbrush having a head part and a handle part connected along a longitudinal axis, wherein the head part has a first region distant from the handle, a second region near the handle, a perimeter surrounding the head , and a head that has brushing means; and a handle part being formed of thermoplastic materials; wherein the brush means comprise: a first brush area on the first region remote from the handle, said first brush area containing an outer brush perimeter region and a densely packed inner brush area; Y a second brush area on said second region close to said handle, said second brush area alternatively contains bars and handles which are oriented transversely to the longitudinal axis.

2. A toothbrush as claimed in clause 1 characterized in that the internal dense brush is a bunch of U-shaped hand shovel bristles.

3. A toothbrush as claimed in clause 1 characterized in that the internal dense brush is a rubber bar or a U-shaped hand blade rubber type material.

4. A toothbrush as claimed in clause 1 characterized in that the internal dense brush is a bunch of hand-shovel bristles in a semicircular shape.

5. A toothbrush as claimed in clause 1, characterized in that the inner dense brush is a semicircular shaped rubber hand blade bar or a rubber type material.

6. A toothbrush as claimed in clause 1 characterized in that the internal dense brush is a bunch of bristles of circular shape.

7. A toothbrush as claimed in clause 1, characterized in that the inner dense brush is a rubber rod or a rubber-like material of circular shape.

8. A toothbrush as claimed in clause 1, characterized in that the internal dense brush is a bundle of horseshoe-shaped bristles.

9. A toothbrush as claimed in clause 1, characterized in that the inner dense brush is a rubber bar or a horse-shoe type rubber material.

10. A toothbrush as claimed in clause 1 characterized in that the transverse bristle rods and interproximal bunches are arranged in an arc.

11. A toothbrush as claimed in clause 1 characterized in that the outer brush perimeter region in the first brush area is provided with a semicircular brush arrangement.

12. A toothbrush as claimed in clause 11 characterized in that the semicircular brush arrangement comprises a plurality of bunches of bristles.

13. A toothbrush as claimed in clause 11 characterized in that the semicircular brush arrangement comprises a rubber bar or semicircular rubber type.

14. A toothbrush as claimed in clause 12 characterized in that the plurality of bristle bunches are angled outwardly of about three degrees.

15. A toothbrush as claimed in clause 12, characterized in that the rubber-like or semicircular rubber-type bar is angled outwardly by about three degrees.

16. A toothbrush as claimed in clause 1 characterized in that the perimeter of the head is provided with a plurality of bunches of bristles or bristle bars angled slightly outwards.

17. A toothbrush as claimed in clause 16 characterized in that the bristles are in the form of a plurality of bunches of bristles.

18. A toothbrush as claimed in clause 6, characterized in that the plurality of the brushes are made of rubber or of a rubber-like material.

19. A toothbrush as claimed in clause 17 characterized in that the bristle bunches are oval in shape.

20. A toothbrush as claimed in clause 18, characterized in that the rubber or the rubber type bar material is oval in shape.

21. A toothbrush as claimed in clause 1 characterized in that the bristle rods are shorter than the bunches of interproximal bristles.

22. A toothbrush as claimed in clause 1 characterized in that the number of bunches or bristle bars on the head is below 30.

23. A toothbrush as claimed in clause 1 characterized in that the densely packed brush area is a densely packed central bunch of bristles.

24. A toothbrush as claimed in clause 1, characterized in that the densely packed brush area is a solid rubber or solid rubber type bar.

25. A toothbrush as claimed in clause 1 characterized in that the densely packed brush area is a rubber massager.

26. A toothbrush as claimed in clause 1 characterized in that the inner area densely packed on the first region is of soft and short bristles densely packed.

27. A toothbrush as claimed in clause 1 characterized in that the first brush area and the second brush area provide visibly distinct utilization portions.

28. A toothbrush as claimed in clause 1 characterized in that the head is formed with a rounded tip.

29. A toothbrush as claimed in clause 1 characterized in that the head is formed with a wave profile.

30. A toothbrush as claimed in clause 1 characterized in that the head has a bottom, and said bottom is provided with an elastic layer.

31. A toothbrush as claimed in clause 30, characterized in that the elastic layer is made of rubber or of a deformable thermoplastic material.

32. A toothbrush as claimed in clause 1 characterized in that the head is formed of a layer of a thermoplastic material about 3 millimeters thick, and has a support bar formed integral to the head band connected to the handle said support bar is used at a point under the head, whereby support for the head part is provided; and wherein the head is provided with a part which is displaced from the horizontal; the head is used to narrow to the end part which is the end part of use; and the head is formed with a rounded end part.

33. A toothbrush as claimed in clause 32, characterized in that the head displacement is in the form of an upward angle at the distal tip.

34. A toothbrush as claimed in clause 32, characterized in that the head displacement is in the form of an upward curve at the distal tip.

35. A toothbrush as claimed in clause 32 characterized in that the head displacement is in the form of a high part curve at the distal tip.

36. A toothbrush as claimed in clause 32 characterized by the head offset is a wave profile along the longitudinal axis.

37. A toothbrush as claimed in clause 32 characterized by the head having a bottom, and said bottom is provided with an elastic layer.

38. A toothbrush comprising a head part and a handle part connected along a longitudinal axis, the head part has brushing means and the handle part is formed of thermoplastic materials, wherein the handle is formed of a first grip portion having a plurality of upper protuberances forming indentations, and a second grip portion formed on the opposite side of the grip from the first grip portion, said second grip portion being formed with at least two indented curvatures close to each other forming a lower protuberance, the head is formed of a layer of thermoplastic material of up to 5 millimeters, in the head has a support bar formed integral to the head and connected to the handle, by which the support for the head part is provided, the head part has a first region distant from the handle, a second region near the handle, a perimeter surrounding the head where the brushing means comprises: a first brush area of said first region remote from the handle, said first brush area containing the outer brush perimeter region, and a densely packed inner brush area; Y a second brush area on said second region near the handle, said second brush area containing alternating rods and bunches which are essentially oriented transverse to the longitudinal axis. SUMMARY An improved toothbrush with a secure grip, a more effective bristle arrangement and a specially shaped head is described. The handle is formed with opposing gripping parts and safely adjusts the user's hand, face up or down, giving the user a very safe and comfortable feeling. The toothbrush has a thin and narrow head for maximum access to the oral cavity, and a novel bristle arrangement which is highly effective for removing plaque from the teeth with manual brushing. In one embodiment, the brush head is tapered to a narrow part and then optionally extends outwardly again. In another embodiment, the head is formed with a wavy profile. In still other embodiments, the brush head can be provided with an angled tip or arched up. The head can also have a lower part to massage the gum, a gum stimulator and a head with visibly different areas of use.