Patent US2518078A successfully refreshed from Google Patents.
US4178364A
Expired / Lapsed
US
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Art of shaving
Assignee: Individual
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Filing: 1975-08-08
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Granted: 1979-12-11
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Expires: 1995-08-08
Abstract
Abstract A method of shaving hair from the human body with a razor wherein the skin area after washing is wet with water and the edge of the razor is wet with a water repellant organopolysiloxane fluid such as dimethyl polysiloxane.
Inventors
- 👤 Jimmy Rucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
A; A61; A61Q; A61Q9/00; A61Q9/02; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61K2800/00; A61K2800/80; A61K2800/87; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0443
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
156 words
A method of shaving with a razor in which the skin is first washed clean and wet with water to provide a colorless transparent first liquid phase over the clean skin area from which the hair is to be shaved with the razor, spreading a drop of water-immiscible fluid consisting of a mixture of dimethyl polysiloxanes having a viscosity of 600 to 700 centistokes across the length of the razor edge to produce a trasparent colorless second liquid phase which adheres to the razor edge and is repellent to the first liquid phase, and moving the dimethyl-polysiloxane-coated razor edge across the water-wet area of the skin, a sharply defined low frictional interface being created between the two liquid phases such that the razor edge slides smoothly across the skin in the shaving act and cuts cleanly close to the skin with minimal pull on the hair and frictional resistance between the skin and the razor edge.
Claim 2
Independent Claim
156 words
A method of shaving with a razor in which the skin is first washed clean and wet with water to provide a colorless transparent first liquid phase over the clean skin area from which the hair is to be shaved with the razor, spreading a drop of water-immiscible fluid consisting of a mixture of dimethyl polysiloxanes having a viscosity of 600 to 700 centistokes across the length of the razor edge to produce a trasparent colorless second liquid phase which adheres to the razor edge and is repellent to the first liquid phase, and moving the dimethyl-polysiloxane-coated razor edge across the water-wet area of the skin, a sharply defined low frictional interface being created between the two liquid phases such that the razor edge slides smoothly across the skin in the shaving act and cuts cleanly close to the skin with minimal pull on the hair and frictional resistance between the skin and the razor edge.
Claim 3
Dependent Claim
42 words
Method of shaving as claimed in claim 1 wherein the fluid with which the razor edge is wet consists of equal parts of dimethyl polysiloxane fluid having a viscosity of 350 centistokes and dimethyl polysiloxane fluid having a viscosity of 1000 centistokes.
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) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |