Patent US4251914A successfully refreshed from Google Patents.
US4251914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaving assembly
Assignee: Individual
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Filing: 1979-10-11
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Granted: 1981-02-24
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Expires: 1999-10-11
Abstract
Abstract A shaving assembly is disclosed for use in surgical shaving or the like, the assembly being adapted to effect removal of hair close to the skin without damaging the epidermis. The assembly comprises a blade seat, and a blade cap secured to the seat, with the outwardly facing surface of the cap being substantially planar and defining a locating and reference plane for contacting the surface of skin to be shaved, whereby to locate and orient the assembly with respect to the skin. Handle means extend from the assembly for grasping and drawing same across the skin in a given direction during shaving. Razor blade means are secured between the seat and cap. The cutting edge portion of the blade means protrude in the given direction beyond the edge of the cap, and the center plane of such portion makes an angle of from about -5° to 14° with respect to the locating and reference plane, where the negative and positive signs of the angle respectively indicate convergence or divergence (in said given direction) between the cutting edge portion plane and the locating and reference plane. The terminal cutting edge of such portion is, further, spaced from the locating and reference plane in the direction of the seat. In consequence of the foregoing arrangement, hairs are cut in scythe-like fashion during the shaving process, by the cutting edge intersecting the hairs above the skin, and substantially without the cutting edge contacting the skin.
Inventors
- 👤 Warren J. Grosjean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:37
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/4012; B26B21/4031; B26B21/08; B26B21/14; B26B21/16; B26B21/4025
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
196 words
A shaving assembly for use in surgical shaving or the like, said assembly being adapted to effect said shaving without damaging the epidermis, and comprising in combination: a blade seat; a blade cap secured to said seat, the outwardly facing surface of said cap being substantially planar and defining a locating and reference plane for contacting the surface of skin to be shaved, whereby to locate and orient said assembly with respect thereto; handle means extending from said assembly, for grasping and drawing said assembly across said skin in a given direction during shaving; and razor blade means being secured between said seat and cap, the cutting edge portion of said blade means protruding in said given direction beyond the edge of said cap; the center plane of the protruding cutting edge portion making an angle of attack from about -5° to +14° with respect to said locating and reference plane, and the cutting edge terminating said portion being spaced from said plane in the direction of said seat, whereby hairs are cut in scythe-like fashion by intersection of said cutting edge with same above the skin, and substantially without said cutting edge contacting the skin.
Claim 2
Dependent Claim
196 words
A shaving assembly for use in surgical shaving or the like, said assembly being adapted to effect said shaving without damaging the epidermis, and comprising in combination: a blade seat; a blade cap secured to said seat, the outwardly facing surface of said cap being substantially planar and defining a locating and reference plane for contacting the surface of skin to be shaved, whereby to locate and orient said assembly with respect thereto; handle means extending from said assembly, for grasping and drawing said assembly across said skin in a given direction during shaving; and razor blade means being secured between said seat and cap, the cutting edge portion of said blade means protruding in said given direction beyond the edge of said cap; the center plane of the protruding cutting edge portion making an angle of attack from about -5° to +14° with respect to said locating and reference plane, and the cutting edge terminating said portion being spaced from said plane in the direction of said seat, whereby hairs are cut in scythe-like fashion by intersection of said cutting edge with same above the skin, and substantially without said cutting edge contacting the skin.
Claim 3
Dependent Claim
18 words
An assembly in accordance with claim 1, wherein said angle of attack is from about 0° to +9°.
Claim 4
Dependent Claim
16 words
An assembly in accordance with claim 1, wherein said angle is from about 0° to +6°.
Claim 5
Dependent Claim
46 words
An assembly in accordance with claim 1, wherein the front edge of said cap is sloped in said given direction toward said cutting edge portion of the sandwiched blade means, the sloped face functioning during shaving to snow-plow the skin away from the terminal cutting edge.
Claim 6
Dependent Claim
26 words
An assembly in accordance with claim 1, wherein said blade means cutting edge portion protrudes beyond the said cap edge from between 0.003 to 0.020 inches.
Claim 7
Dependent Claim
50 words
An assembly in accordance with claim 1, wherein said cutting edge portion of said blade means is beveled at the tip thereof to define said cutting edge, whereby the surface of said bevel toward said reference and locating plane further displaces said skin away from said cutting edge during shaving.
Claim 8
Dependent Claim
36 words
An assembly in accordance with claim 1, wherein said cutting edge portion of said blade means is bent from the remainder of said blade means in the direction of said seat, to reduce the said angle.
Claim 9
Dependent Claim
35 words
An assembly in accordance with claim 1, wherein said outwardly facing surface of said cap means is substantially larger than the opposed said blade seat, to thereby provide an enlarged said locating and reference plane.
Claim 10
Dependent Claim
41 words
An assembly in accordance with claim 1, wherein said outwardly facing surface of said cap means includes spacer ridges at the lateral edges thereof, to further preclude contact of the lateral edges of said blade means with said skin during shaving.
Claim 11
Dependent Claim
178 words
A shaving assembly for use in shaving bodily hair, comprising in combination: a razor blade cap secured to a blade seat with blade means sandwiched therebetween; said cap having a substantially planer locating face for contacting the surface of skin to be shaved and for locating and orienting said assembly with respect to said skin; handle means extending from said assembly for grasping and drawing said assembly across said skin in a given direction with said locating face in contact with said skin; said blade means having a portion terminating at a cutting edge and protruding in said given direction beyond the edge of said cap; said protruding portion making an angle of from about -5° to +14° with respect to said locating face of said blade cap; and said cutting edge being spaced from said locating face in the direction of said seat; whereby bodily hairs to be shaved by said assembly are cut in scythe-like fashion by said cutting edge intersecting said hairs above the skin, and substantially without the said cutting edge contacting the skin.
Claim 12
Dependent Claim
178 words
A shaving assembly for use in shaving bodily hair, comprising in combination: a razor blade cap secured to a blade seat with blade means sandwiched therebetween; said cap having a substantially planer locating face for contacting the surface of skin to be shaved and for locating and orienting said assembly with respect to said skin; handle means extending from said assembly for grasping and drawing said assembly across said skin in a given direction with said locating face in contact with said skin; said blade means having a portion terminating at a cutting edge and protruding in said given direction beyond the edge of said cap; said protruding portion making an angle of from about -5° to +14° with respect to said locating face of said blade cap; and said cutting edge being spaced from said locating face in the direction of said seat; whereby bodily hairs to be shaved by said assembly are cut in scythe-like fashion by said cutting edge intersecting said hairs above the skin, and substantially without the said cutting edge contacting the skin.
Claim 13
Dependent Claim
16 words
An assembly in accordance with claim 10, wherein said angle is from about 0° to +6°.
Claim 14
Dependent Claim
31 words
An assembly in accordance with claim 10, wherein said blade means cutting edge portion protrudes beyond the said cap edge in the range of from about 0.003 to about 0.020 inches.
Claim 15
Dependent Claim
32 words
An assembly in accordance with claim 10, wherein said handle means makes an angle in the range of from about 12° to 18° with respect to the locating face of said cap.
Claim 16
Dependent Claim
30 words
An assembly in accordance with claim 10, wherein said cap is secured to said seat by projections from the one engaging with openings in the other in an interference fit.
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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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |