US3953907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin toothbrushes
Assignee: Individual
•
Filing: 1975-02-26
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Granted: 1976-05-04
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Expires: 1995-02-26
Abstract
Abstract This document discloses a toothbrush having opposed bristles rigidly separated from the biforcated end of a handle in such spaced relation as to accommodate teeth of different thicknesses for vertical brushing.
Inventors
- 👤 Camille Henri Froidevaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:13
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/0004; A46B5/0012; A46B9/00; A46B9/02; A46B9/04; A46B9/045; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
178 words
A toothbrush comprising a handle, having first and second bifurcated arms projecting in mutually spaced relation therefrom with the first arm formed as a planar continuation of the said handle and the second adjacent arm formed at an acute angle to the first arm; bristles of substantially equal length rigidly fixed to and extending from said arms toward one another to define therebetween a space longer but narrower than the width of a tooth, said space being wider toward the free ends of said arms and narrower toward said handle, whereby the brush may be pushed astride the teeth and thereafter manipulated in vertical strokes to clean them, said handle comprising two parts releasably interconnected to each other by means extending longitudinally along the handle, one of said parts being integral with one of said arms and the other of said parts being integral with the other of said arms, whereby when said parts and said arms integral therewith are disconnected, the first arm and the part integral therewith may be individually used for brushing of the teeth.
Claim 2
Dependent Claim
178 words
A toothbrush comprising a handle, having first and second bifurcated arms projecting in mutually spaced relation therefrom with the first arm formed as a planar continuation of the said handle and the second adjacent arm formed at an acute angle to the first arm; bristles of substantially equal length rigidly fixed to and extending from said arms toward one another to define therebetween a space longer but narrower than the width of a tooth, said space being wider toward the free ends of said arms and narrower toward said handle, whereby the brush may be pushed astride the teeth and thereafter manipulated in vertical strokes to clean them, said handle comprising two parts releasably interconnected to each other by means extending longitudinally along the handle, one of said parts being integral with one of said arms and the other of said parts being integral with the other of said arms, whereby when said parts and said arms integral therewith are disconnected, the first arm and the part integral therewith may be individually used for brushing of the teeth.
Claim 3
Dependent Claim
17 words
A toothbrush as claimed in claim 1, in which said means comprises a dovetail tongue and groove.
References Cited (Backward Citations)
GB189519465A
Cited
CH17726A
Cited
US741722A
Cited
US1025751A
Cited
US2528992A
Cited
US3067447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |