US4472853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush
Assignee: Individual
•
Filing: 1982-04-21
•
Granted: 1984-09-25
•
Expires: 2002-04-21
Abstract
Abstract An improved toothbrush advantageously designed for horizontal brushing and selectively distributing brushing forces between the teeth and gums such that the teeth surfaces and gums are simultaneously cleaned and stimulated without damage to the gums.
Inventors
- 👤 Samuel Rauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
A; A46; A46B; A46B15/00; A46B15/0055; A46B15/0075; A46B5/00; A46B5/002; A46B5/0025; A46B7/00; A46B7/06; A46B9/00; A46B9/02; A46B9/04; A46B9/06; A46B2200/00; A46B2200/10; A46B2200/1066; Y; Y10; Y10S; Y10S15/00; Y10S15/05; Y10S15/06
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
245 words
An improved toothbrush for cleaning teeth and simultaneously cleaning and stimulating gums, which comprises: a brush body having an elongated handle; the brush body having its width substantially perpendicular to the longitudinal axis of the elongated handle, the brush body being longest in width than its length; a plurality of bristles having first ends embedded in the brush body and second ends projecting therefrom defining a brushing surface, the brushing surface's width being longer than its length; the brushing surface being so adapted to facilitate simultaneous selective application of more than one medication or the like; the brushing surface having two gum-stimulating portions, one disposed along each of its lengthwise edges that primarily contact the gums during horizontal brushing and a teeth cleaning portion that primarily contact the teeth during horizontal brushing, the teeth cleaning portion never extending below the gum-stimulating portions; and the gum-stimulating portions and the teeth portion being so configured that the brushing force results in a lower pressure on the gums than is on the teeth and the brushing surface having means for providing simultaneous contact of the upper and lower gums when the respective upper and lower teeth are contacted by the brush surface, and the brushing surface and handle having further means for providing an overturning moment when the upper or lower teeth are brushed requiring the toothbrush user, to push the brush surface in the buccal corridor to prevent the brush surface from rotating away from the teeth.
Claim 2
Dependent Claim
245 words
An improved toothbrush for cleaning teeth and simultaneously cleaning and stimulating gums, which comprises: a brush body having an elongated handle; the brush body having its width substantially perpendicular to the longitudinal axis of the elongated handle, the brush body being longest in width than its length; a plurality of bristles having first ends embedded in the brush body and second ends projecting therefrom defining a brushing surface, the brushing surface's width being longer than its length; the brushing surface being so adapted to facilitate simultaneous selective application of more than one medication or the like; the brushing surface having two gum-stimulating portions, one disposed along each of its lengthwise edges that primarily contact the gums during horizontal brushing and a teeth cleaning portion that primarily contact the teeth during horizontal brushing, the teeth cleaning portion never extending below the gum-stimulating portions; and the gum-stimulating portions and the teeth portion being so configured that the brushing force results in a lower pressure on the gums than is on the teeth and the brushing surface having means for providing simultaneous contact of the upper and lower gums when the respective upper and lower teeth are contacted by the brush surface, and the brushing surface and handle having further means for providing an overturning moment when the upper or lower teeth are brushed requiring the toothbrush user, to push the brush surface in the buccal corridor to prevent the brush surface from rotating away from the teeth.
Claim 3
Dependent Claim
42 words
An improved toothbrush as recited in claim 1, wherein the brushing surface, further comprises: at least one gumline treatment portion comprising a plurality bristles of selected flexibility disposed between the teeth cleaning portion and the gum stimulating portion of the brushing surface.
Claim 4
Dependent Claim
42 words
An improved toothbrush as recited in claim 1 wherein the brush body has a width approximately three times its length, the brushing surface has a width approximately three times its length and the teeth cleaning portion is approximately 3/16 to 1/4 inch.
Claim 5
Dependent Claim
43 words
An improved toothbrush as recited in claim 1 wherein the brushing surface is flat and the brush body is stepped so that the bristles comprising the gum-stimulating portions of the brushing surface are longer and more flexible than those in the teeth-cleaning portion.
Claim 6
Dependent Claim
37 words
An improved toothbrush as recited in claim 3 wherein the brush body is curved so that the bristles comprising the gum-stimulating portions of the brushing surface are longer and more flexible than those in the teeth-cleaning portion.
Claim 7
Dependent Claim
33 words
An improved toothbrush as recited in claim 3 wherein the bristles comprising the gum-stimulating portions of the brushing surface are fabricated from a more flexible material than the bristles of the teeth-cleaning portion.
Claim 8
Dependent Claim
25 words
An improved toothbrush as recited in claim 3 wherein the bristles comprising the gum-stimulating portions of the brushing surface are formed from an elastomeric compound.
Claim 9
Dependent Claim
30 words
An improved toothbrush as recited in claim 3 wherein the bristles comprising the gum-stimulating portion have a smaller diameter and are more flexible than those of the teeth cleaning portion.
Claim 10
Dependent Claim
30 words
An improved toothbrush as recited in claim 3 wherein the bristles comprising the gum-stimulating portions of the brushing surface are tapered and more flexible than those in the teeth-cleaning portion.
Claim 11
Dependent Claim
21 words
An improved toothbrush as recited in any of claims 9 wherein at last some of the bristles are arranged in tufts.
Claim 12
Dependent Claim
32 words
An improved toothbrush as recited in claim 10 wherein the tufts in the gum-stimulating portions of the brushing surface have bristles of variable length, more flexible than those in the teeth-cleaning portion.
Claim 13
Dependent Claim
26 words
An improved toothbrush as recited in claim 10 wherein the tufts of bristles comprising the gum-stimulating portion are more flexible than those of the teeth-cleaning portion.
Claim 14
Dependent Claim
39 words
An improved toothbrush as recited in claim 10 wherein the tufts of bristles comprising the gum-stimulating portion are less dense than those in the tooth portion and when taken together are more flexible than those in the teeth-cleaning portion.
Claim 15
Dependent Claim
50 words
An improved toothbrush as recited in claim 3 wherein the bristles comprising the gum-stimulating portions are disposed on independent brush body segments connected and to the brush body by flexible members that permit deflection of the independent segments resulting in less pressure being applied by the gum-stimulating portions during brushing.
Claim 16
Dependent Claim
49 words
An improved toothbrush as recited in claim 3 wherein the bristles comprising the gum-stimulating portions are disposed on independent brush body segments adjacent to the brush body and connected to the elongated handle by flexible members such that less brushing pressure is applied by the gum-stimulating portions during brushing.
Claim 17
Dependent Claim
44 words
An improved toothbrush for cleaning teeth and cleaning and stimulating gums, which comprises: a brush body having an elongated handle; the brush body having its width substantially perpendicular to the axis of the elongated handle the brush body width being 2-4 times its length;
Claim 18
Dependent Claim
44 words
An improved toothbrush for cleaning teeth and cleaning and stimulating gums, which comprises: a brush body having an elongated handle; the brush body having its width substantially perpendicular to the axis of the elongated handle the brush body width being 2-4 times its length;
Claim 19
Dependent Claim
198 words
a plurality of bristles having first ends embedded in the brush body and second ends projecting therefrom defining a brushing surface; the brush body width, the brushing surface's width being 2-4 times its length; the brushing surface having two gum stimulating portions one disposed along each of its lengthwise edges that primarily contact the gums during horizontal brushing and a teeth cleaning portion disposed between the gum stimulating portions that primarily contacts the teeth during horizontal brushing; the brushing surface being stepped so that shorter bristles comprise the gum-stimulating portions and longer bristles comprise the teeth cleaning portion so that the shorter bristles contact the gums only after significant deflection of the longer bristles causing greater brushing pressure to be applied to teeth and the brushing surface having means for providing simultaneous contact of the upper and lower gums when the respective upper and lower teeth are contacted by the brush surface, and the brushing surface and handle having further means for providing an overturning moment when the upper or lower teeth are brushed requiring the toothbrush user to push the brush surface in the buccal corridor to prevent the brush surface from rotating away from the teeth.
Claim 20
Dependent Claim
198 words
a plurality of bristles having first ends embedded in the brush body and second ends projecting therefrom defining a brushing surface; the brush body width, the brushing surface's width being 2-4 times its length; the brushing surface having two gum stimulating portions one disposed along each of its lengthwise edges that primarily contact the gums during horizontal brushing and a teeth cleaning portion disposed between the gum stimulating portions that primarily contacts the teeth during horizontal brushing; the brushing surface being stepped so that shorter bristles comprise the gum-stimulating portions and longer bristles comprise the teeth cleaning portion so that the shorter bristles contact the gums only after significant deflection of the longer bristles causing greater brushing pressure to be applied to teeth and the brushing surface having means for providing simultaneous contact of the upper and lower gums when the respective upper and lower teeth are contacted by the brush surface, and the brushing surface and handle having further means for providing an overturning moment when the upper or lower teeth are brushed requiring the toothbrush user to push the brush surface in the buccal corridor to prevent the brush surface from rotating away from the teeth.
Claim 21
Dependent Claim
14 words
A improved toothbrush as recited in claim 16 wherein the brushing surface is convex.
Claim 22
Dependent Claim
44 words
An improved toothbrush as recited in any one of claims 1 through 9 or 11 through 17 wherein a flexible weakened section is provided between the brush body and the elongated handle to dampen the brushing force transmitted to a user's teeth and gums.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |