Patent US4512077A successfully refreshed from Google Patents.
US4512077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric shaver having improved shaving characteristics
Assignee: Panasonic Electric Works Co Ltd
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Filing: 1983-01-21
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Granted: 1985-04-23
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Expires: 2003-01-21
Abstract
Abstract An electric shaver comprising a housing, a shaving head projecting from an upper end of the housing, a shaving blade having a front shaving edge extending laterally along a front end of the head, a comb having a number of combing teeth arranged laterally side by side and positioned below the front shaving edge of the shaving blade, and an edge cover provided above the shaving blade for abutting against skin when the shaver is in use to regulate, together with the comb, an angle which the edge of the shaving blade makes with respect to the skin. A front edge of the edge cover, the front shaving edge of the shaving blade, and a front end of the comb are aligned substantially on a straight line in a plane perpendicularly cutting the front end of the edge cover, the front shaving edge of the shaving blade and the front end of the comb. In a modified embodiment, the front shaving edge of the shaving blade is located below and slightly offset from a straight line connecting the front edge of the edge cover and front edge of the comb.
Inventors
- 👤 Toshio Tanabe
- 👤 Masakazu Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:49
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/02; B26B19/04; B26B19/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
231 words
An electric shaver comprising: a housing; a shaving head projecting from an upper end of said housing; a shaving blade having a front shaving edge extending laterally along a front end of said head, said front edge of said shaving blade projecting from said front end of said head, said shaving blade comprising a fixed blade which has at a front end thereof a comb-shaped edge comprising a number of small teeth arranged laterally side by side and which is fixed in a predetermined position at said head, and a movable blade which has a comb-shaped edge in slidable contact with said comb-shaped edge of said fixed blade and which is movable in reciprocation laterally of said head; a comb having a number of combing teeth arranged laterally side by side and positioned below said front shaving edge of said shaving blade; an edge cover provided above said shaving blade for abutting against skin when said shaver is in use to regulate, together with said comb, an angle which the edge of said shaving blade makes with respect to said skin; and a front edge of said edge cover, and a front end of said comb being aligned on a straight line in a plane perpendicular to and cutting said front edge of said edge cover, said front shaving edge of said shaving blade and said front end of said comb.
Claim 2
Dependent Claim
231 words
An electric shaver comprising: a housing; a shaving head projecting from an upper end of said housing; a shaving blade having a front shaving edge extending laterally along a front end of said head, said front edge of said shaving blade projecting from said front end of said head, said shaving blade comprising a fixed blade which has at a front end thereof a comb-shaped edge comprising a number of small teeth arranged laterally side by side and which is fixed in a predetermined position at said head, and a movable blade which has a comb-shaped edge in slidable contact with said comb-shaped edge of said fixed blade and which is movable in reciprocation laterally of said head; a comb having a number of combing teeth arranged laterally side by side and positioned below said front shaving edge of said shaving blade; an edge cover provided above said shaving blade for abutting against skin when said shaver is in use to regulate, together with said comb, an angle which the edge of said shaving blade makes with respect to said skin; and a front edge of said edge cover, and a front end of said comb being aligned on a straight line in a plane perpendicular to and cutting said front edge of said edge cover, said front shaving edge of said shaving blade and said front end of said comb.
Claim 3
Dependent Claim
23 words
An electric shaver according to claim 1, wherein said front shaving edge of said shaving blade is substantially aligned on said straight line.
Claim 4
Dependent Claim
26 words
An electric shaver according to claim 1, wherein said front shaving edge of said shaving blade is located below and slightly offset from said straight line.
Claim 5
Dependent Claim
29 words
An electric shaver according to claim 2, wherein said comb-shaped edge of said movable blade is positioned between said comb-shaped edge of said fixed blade and said edge cover.
Claim 6
Dependent Claim
29 words
An electric shaver according to claim 3, wherein said comb-shaped edge of said movable blade is positioned between said comb-shaped edge of said fixed blade and said edge cover.
Claim 7
Dependent Claim
32 words
An electric shaver according to claim 2, wherein an interval between respective adjacent teeth at said fixed blade is smaller than an interval between the respective adjacent combing teeth at said comb.
Claim 8
Dependent Claim
43 words
An electric shaver according to claim 2, wherein said front edge of said edge cover, said front edge of said shaving blade, and said front end of said comb are each curved forwardly in a circular arc and have a swelled central portion.
Claim 9
Dependent Claim
43 words
An electric shaver according to claim 3, wherein said front edge of said edge cover, said front edge of said shaving blade, and said front end of said comb are each curved forwardly in a circular arc and have a swelled central portion.
Claim 10
Dependent Claim
65 words
An electric shaver according to claim 2 further comprising a recess, formed above and in said edge cover and extending throughout an approximately longitudinally overall length of a front end of said edge cover, said recess opening upwardly in a plane which is perpendicular to the front edge of said shaving blade and facing at one end thereof said front edge of said edge cover.
Claim 11
Dependent Claim
65 words
An electric shaver according to claim 3 further comprising a recess, formed above and in said edge cover and extending throughout an approximately longitudinally overall length of a front end of said edge cover, said recess opening upwardly in a plane which is perpendicular to the front edge of said shaving blade and facing at one end thereof said front edge of said edge cover.
Claim 12
Dependent Claim
20 words
An electric shaver according to claim 2, wherein said comb is spaced from and is located below said shaving blade.
Claim 13
Dependent Claim
23 words
An electric shaver according to claim 3, wherein said comb is integrally connected to said shaving blade and extends forwardly and downwardly therefrom.
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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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |