US4020521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush
Assignee: Individual
•
Filing: 1975-04-11
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Granted: 1977-05-03
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Expires: 1995-04-11
Abstract
Abstract A dental appliance and, in particular a toothbrush, includes a V-shaped bristle configuration formed in a first member. The first member is incrementally rotatably mounted in a second member.
Inventors
- 👤 Robert L. Velasquez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:17
CPC Classifications
A; A46; A46B; A46B7/00; A46B7/02; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
226 words
A toothbrush, comprising: a. a first member comprising: 1. a support having opposite first and second surfaces, 2. a projection depending from the second surface and having a plurality of serrations formed therearound, b. a plurality of bristles projecting outwardly from and substantially perpendicular to the first surface of the first member, the bristles being configured in the shape of a V, c. an elongate second member having an aperture formed therethrough proximate a first end thereof, the aperture having a plurality of serrations formed therearound, the serrations being complementarily configured to the projection, the aperture receiving the projection to retain the first member, the second member having a slit in a plane perpendicular to said second member and extending from the first end to the aperture, wherein the complementary serrations define means for incrementally rotating the first member about the vertical axis of the second member, the projection having a height equal to the depth of the aperture such that the terminus of the projections is coplanar with the surface of the second member, d. said serations of said projection and said serations of said aperture having edges that are straight and parallel with respect to each other for the entire length of the projection and the full depth of aperture and e. the projection having a diameter slightly larger that that of the aperture.
Claim 2
Dependent Claim
226 words
A toothbrush, comprising: a. a first member comprising: 1. a support having opposite first and second surfaces, 2. a projection depending from the second surface and having a plurality of serrations formed therearound, b. a plurality of bristles projecting outwardly from and substantially perpendicular to the first surface of the first member, the bristles being configured in the shape of a V, c. an elongate second member having an aperture formed therethrough proximate a first end thereof, the aperture having a plurality of serrations formed therearound, the serrations being complementarily configured to the projection, the aperture receiving the projection to retain the first member, the second member having a slit in a plane perpendicular to said second member and extending from the first end to the aperture, wherein the complementary serrations define means for incrementally rotating the first member about the vertical axis of the second member, the projection having a height equal to the depth of the aperture such that the terminus of the projections is coplanar with the surface of the second member, d. said serations of said projection and said serations of said aperture having edges that are straight and parallel with respect to each other for the entire length of the projection and the full depth of aperture and e. the projection having a diameter slightly larger that that of the aperture.
Claim 3
Dependent Claim
19 words
The toothbrush of claim 1 wherein the support member has a width equal to that of the second member.
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |