US4382309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush
Assignee: Individual
•
Filing: 1980-08-05
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Granted: 1983-05-10
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Expires: 2000-08-05
Abstract
Abstract A toothbrush is disclosed which is capable of cleaning the buccal-labial and lingual surfaces of teeth simultaneously. The method of fabricating the toothbrush is also disclosed. The toothbrush includes a bristle mounting head, a holder for supporting the bristle mounting head and a plurality of cleaning bristles on the bristle mounting head, with the cleaning bristles being in the form of two arcuate or angular shaped bundles of nylon filaments, whose ends are spaced apart and opposed to each other. When the toothbrush is placed over teeth to be cleaned the tips of the bristles at the ends of the bundle rub against opposite surfaces of the teeth. The toothbrush may be made by winding a nylon monofilament around a mandrel an appropriate number of times, setting the windings to the cylindrical shape, bonding the windings together, removing the cylinder from the mandrel, cutting away a section of the cylinder and then attaching the remaining section of the cylinder to a bristle mounting head attached to a toothbrush holder, in one embodiment.
Inventors
- 👤 George C. Collis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:04
CPC Classifications
A; A46; A46D; A46D3/00; A46D3/04; A46D3/045; A46B; A46B9/00; A46B9/02; A46B9/04; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
A toothbrush for simultaneously brushing the bucaal and lingual surfaces of the teeth in one brushing operation comprising: a. an elongated handle b. a bristle mounting head formed as a planar continuation of said handle, c. a plurality of cleaning bristles, having distal and proximal ends, arranged in three longitudinal parallel rows all of which rows run parallel to the length of the handle, the proximal ends of all of said bristles being disposed in said head and extending upwardly in the same general direction along each row from said head from one side thereof, the distal ends of all of the bristles in the outer rows of bristles being directed inwardly in a generally transverse direction from said generally upward direction toward the inner row of bristles, the inner row of bristles being straight and shorter in height than the outer rows of bristles, the outer rows being of uniform bristle height.
Claim 2
Dependent Claim
153 words
A toothbrush for simultaneously brushing the bucaal and lingual surfaces of the teeth in one brushing operation comprising: a. an elongated handle b. a bristle mounting head formed as a planar continuation of said handle, c. a plurality of cleaning bristles, having distal and proximal ends, arranged in three longitudinal parallel rows all of which rows run parallel to the length of the handle, the proximal ends of all of said bristles being disposed in said head and extending upwardly in the same general direction along each row from said head from one side thereof, the distal ends of all of the bristles in the outer rows of bristles being directed inwardly in a generally transverse direction from said generally upward direction toward the inner row of bristles, the inner row of bristles being straight and shorter in height than the outer rows of bristles, the outer rows being of uniform bristle height.
Claim 3
Dependent Claim
19 words
The toothbrush as in claim 1 wherein the bristles are arranged in tufts within said parallel rows of bristles.
Claim 4
Dependent Claim
20 words
The toothbrush of claim 1 wherein the bristles of the outer rows are arcuate from proximal end to distal end.
Claim 5
Dependent Claim
20 words
The toothbrush of claim 2 wherein the bristles of the outer rows are arcuate from proximal end to distal end.
Claim 6
Dependent Claim
30 words
The toothbrush of claim 1 wherein the distal ends of the bristles of the outer rows are disposed at about a right angle inwardly toward the space between the rows.
Claim 7
Dependent Claim
126 words
A toothbrush for simultaneously brushing the bucaal and lingual surfaces of the teeth in one brushing operation comprising: a. an elongated handle b. a bristle mounting head formed as a planar continuation of said handle, c. a plurality of cleaning bristles, having distal and proximal ends, and an intermediate portion, said bristles being arranged in two longitudinal spaced parallel rows both of which rows run parallel to the length of the handle, the proximal ends of said bristles being disposed in said head whereby said bristles extend from said head; the proximal ends of said bristles extending angularly outward from said head, the intermediate portion of said bristles being vertically disposed, and the distal ends of said bristles being directed angularly inwardly toward the space therebetween.
Claim 8
Dependent Claim
126 words
A toothbrush for simultaneously brushing the bucaal and lingual surfaces of the teeth in one brushing operation comprising: a. an elongated handle b. a bristle mounting head formed as a planar continuation of said handle, c. a plurality of cleaning bristles, having distal and proximal ends, and an intermediate portion, said bristles being arranged in two longitudinal spaced parallel rows both of which rows run parallel to the length of the handle, the proximal ends of said bristles being disposed in said head whereby said bristles extend from said head; the proximal ends of said bristles extending angularly outward from said head, the intermediate portion of said bristles being vertically disposed, and the distal ends of said bristles being directed angularly inwardly toward the space therebetween.
Claim 9
Dependent Claim
24 words
The toothbrush of claim 1 wherein the distal ends of all of the bristles of the outer rows of bristles are directed arcuately inwardly.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |