Patent US4875248A successfully refreshed from Google Patents.
US4875248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable toothbrush
Assignee: Colgate Palmolive Co
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Filing: 1988-03-23
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Granted: 1989-10-24
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Expires: 2008-03-23
Abstract
Abstract A rotatable shaft (16) having a deformable rubber sleeve (17) is located in a hollow section (23) of a toothbrush handle (10). A thumb-operated gear ring (19) is secured to the rubber sleeve (17) and the assembly is disposed in a chamber of the handle (23) so that the ring (18) is accessible through an opening (20) in the outer shell of the handle. The inner chamber surface has teeth (24) which engage the teeth on the ring (18) and maintain it in place when the ring (18) is pressed to displace the rubber sleeve (17) and attached ring (18) against the chamber teeth (24) which prevents the shaft (16) from being rotated when a desired angular position of the handle and brush is achieved.
Inventors
- 👤 Steven Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:55
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/002; A46B5/0054; A46B5/0075; A46B5/0079; A46B2200/00; A46B2200/10; A46B2200/1066; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
An adjustable toothbrush comprising a handle, a shaft mounted for rotation within said handle and having a portion extending beyond the handle terminating in a brush head having bristles thereon, said handle having a chamber in the interior thereof, said handle having an opening to its outer surface and communicating with said chamber, said shaft passing through said chamber, deformable material in sid chamber surrounding a portion of said shaft, said deformable material having a ring gear thereon extending to the outer surface of said deformable material, said ring gear being accessible through said opening, gear teeth fixed to said handle within said chamber for meshing engagement with said ring gear, said ring gear being engageable with said gear teeth upon application of pressure on said ring gear through said opening, said ring gear being engageable with said gear teeth to prevent rotation of said shaft.
Claim 2
Dependent Claim
146 words
An adjustable toothbrush comprising a handle, a shaft mounted for rotation within said handle and having a portion extending beyond the handle terminating in a brush head having bristles thereon, said handle having a chamber in the interior thereof, said handle having an opening to its outer surface and communicating with said chamber, said shaft passing through said chamber, deformable material in sid chamber surrounding a portion of said shaft, said deformable material having a ring gear thereon extending to the outer surface of said deformable material, said ring gear being accessible through said opening, gear teeth fixed to said handle within said chamber for meshing engagement with said ring gear, said ring gear being engageable with said gear teeth upon application of pressure on said ring gear through said opening, said ring gear being engageable with said gear teeth to prevent rotation of said shaft.
Claim 3
Dependent Claim
25 words
An adjustable toothbrush according to claim 1, wherein means are provided for locking the ring gear in engagement with said gear teeth in said chamber.
Claim 4
Dependent Claim
27 words
An adjustable toothbrush according to claim 2, wherein said locking means is hinged catch and capable of locking said ring gear in engagement with said gear teeth.
Claim 5
Dependent Claim
23 words
An adjustable toothbrush according to claim 3, wherein said locking means has teeth operable to engage said gear teeth of said ring gear.
Claim 6
Dependent Claim
35 words
An adjustable toothbrush according to claim 2, wherein said locking means is a slide mounted in said handle and capable of sliding into position to lock said ring gear into engagement with said gear teeth.
Claim 7
Dependent Claim
23 words
An adjustable toothbrush according to claim 5, wherein said locking means has teeth operable to engage said gear teeth of said ring gear.
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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) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |