US4606121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for a vibration-type dry-shaver
Assignee: US Philips Corp
•
Filing: 1985-02-04
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Granted: 1986-08-19
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Expires: 2005-02-04
Abstract
Abstract A drive mechanism for a dry shaver comprising a shear foil and a cutter reciprocatory relative to the shear foil includes a single-phase synchronous motor having a drive shaft. A cam is mounted on the drive shaft, and a transmission roller is constantly in contact with the cam. The surface of at least one of the cam and the transmission roller is provided with a layer approximately 1 mm in thickness of an elastic material.
Inventors
- 👤 Gerhard Diefenbach
- 👤 Hugo Schemmann
- 👤 Romuald L. Bukoschek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:56
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/28; B26B19/282
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A drive mechanism for a dry shaver comprising a shear foil and a cutter reciprocatory relative to the shear foil, which includes a single-phase synchronous motor having a drive shaft; a cam mounted on said drive shaft; and a transmission roller constantly in contact with said cam; the surface of at least one of said cam and said transmission roller being provided with a layer approximately 1 mm in thickness of an elastic material.
Claim 2
Dependent Claim
74 words
A drive mechanism for a dry shaver comprising a shear foil and a cutter reciprocatory relative to the shear foil, which includes a single-phase synchronous motor having a drive shaft; a cam mounted on said drive shaft; and a transmission roller constantly in contact with said cam; the surface of at least one of said cam and said transmission roller being provided with a layer approximately 1 mm in thickness of an elastic material.
Claim 3
Dependent Claim
18 words
A drive mechanism according to claim 1, in which the elastic material layer is provided on the cam.
Claim 4
Dependent Claim
19 words
A drive mechanism according to claim 1, in which the elastic material layer is provided on the transmission roller.
Claim 5
Dependent Claim
24 words
A drive mechanism according to claim 1, in which each of the cam and the transmission roller is provided with the elastic material layer.
Claim 6
Dependent Claim
16 words
A drive mechanism according to claim 1, in which the elastic material is an elastic rubber.
References Cited (Backward Citations)
US2203021A
Cited
US2287686A
Cited
GB825518A
Cited
US3714711A
Cited
GB1435456A
Cited
US4312126A
Cited
US4400875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |