Patent US3691587A successfully refreshed from Google Patents.
US3691587A
Expired / Lapsed
US
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Toothbrush
Assignee: Individual
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Filing: 1971-01-22
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Granted: 1972-09-19
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Expires: 1991-01-22
Abstract
Abstract A toothbrush in which a pair of bristle carriers are pivotally mounted to one handle adjacent each other and are rotatable between a position in which they are aligned and perpendicular to one handle and a position in which they are parallel to each other and to the handle. Movement is imparted through a latchable slide on one handle which is connected to the carriers by tapered, deformable arms integrally molded with one carrier and slides in a single injection operation.
Inventors
- 👤 Herbert Makowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:28
CPC Classifications
A; A46; A46B; A46B7/00; A46B7/02; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A toothbrush comprising a. a handle, b. two bristle carriers pivotally mounted on the handle and rotatable between an aligned position in which they are substantially perpendicular to the handle and a parallel position in which they are substantially parallel to the handle, c. a slide member slidably mounted on the handle, and d. deformable traction and thrust members connecting the slide to the bristle carriers whereby rotation of the bristle carriers relative to the handle is effected by moving the slide, e. the deformable traction and thrust members, the bristle carriers and the slide member comprising a single, unitary piece formed of plastic.
Claim 2
Dependent Claim
104 words
A toothbrush comprising a. a handle, b. two bristle carriers pivotally mounted on the handle and rotatable between an aligned position in which they are substantially perpendicular to the handle and a parallel position in which they are substantially parallel to the handle, c. a slide member slidably mounted on the handle, and d. deformable traction and thrust members connecting the slide to the bristle carriers whereby rotation of the bristle carriers relative to the handle is effected by moving the slide, e. the deformable traction and thrust members, the bristle carriers and the slide member comprising a single, unitary piece formed of plastic.
Claim 3
Dependent Claim
43 words
A toothbrush according to claim 1 further comprising pivotable backstop on the slide which may be alternately engaged with the ends of a depression in the handle for restraining the bristle carriers from rotation in one direction, in each of their terminal positions.
Claim 4
Dependent Claim
27 words
A toothbrush according to claim 2 wherein the backstop is connected with the slide by a shaft which is integrally molded with the slide and the backstop.
Claim 5
Dependent Claim
57 words
A toothbrush according to claim 1 wherein: a. the traction and thrust members are tapered toward the bristle carriers, b. the slide is connected with the traction and thrust members by a thrust rod, and c. the tapered ends of the members are formed by a split in the middle of one end of the thrust rod.
Claim 6
Dependent Claim
19 words
A toothbrush according to claim 4 wherein the thrust rod is guided on the handle by a dovetail groove.
Claim 7
Dependent Claim
48 words
A toothbrush according to claim 1 wherein: a. the bristle carriers are provided with pins fitted in holes in the handle and the pins are provided with retaining heads, and b. the holes and the heads are longitudinal and are not aligned when the toothbrush is being used.
Claim 8
Dependent Claim
24 words
A toothbrush according to claim 6 wherein the holes are circular and the heads are deformable and are pressed through the holes during assembly.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |