Patent US4663843A successfully refreshed from Google Patents.
US4663843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Razor with angled-edge blades
Assignee: Individual
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Filing: 1986-05-19
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Granted: 1987-05-12
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Expires: 2006-05-19
Abstract
Abstract A shaving razor utilizes a trailing blade aligned along the longitudinal axis of the razor's shaving head for trimming and at least one leading blade for primary shaving. The cutting edge of the leading blade is aligned diagonally to the cutting edge of the trailing blade and therefore slices through the hair or beard at a different angle of attack than does a conventional blade, thereby reducing drag and yielding a smoother shave.
Inventors
- 👤 Brian D. Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:12
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/28; B26B21/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A razor comprising: (a) an elongated head for supporting a plurality of cutting blades at a predetermined inclination; (b) a trailing blade supported by said head with the cutting edge of said blade aligned parallel to the longitudinal axis of said head; and (c) a pair of leading blades supported by said head with their respective cutting edges extending in opposing diagonals relative to said trailing blade with each blade extending over 50% of the length of said trailing blade such that said leading blades' cutting edges overlap near the center of said head proximal said trailing blade with said trailing blade cutting edge and each said leading blade cutting edge forming an included angle of about 15° to about 30° therebetween.
Claim 2
Dependent Claim
122 words
A razor comprising: (a) an elongated head for supporting a plurality of cutting blades at a predetermined inclination; (b) a trailing blade supported by said head with the cutting edge of said blade aligned parallel to the longitudinal axis of said head; and (c) a pair of leading blades supported by said head with their respective cutting edges extending in opposing diagonals relative to said trailing blade with each blade extending over 50% of the length of said trailing blade such that said leading blades' cutting edges overlap near the center of said head proximal said trailing blade with said trailing blade cutting edge and each said leading blade cutting edge forming an included angle of about 15° to about 30° therebetween.
Claim 3
Dependent Claim
105 words
A razor comprising: (a) an elongated head for supporting a plurality of cutting blades at a predetermined inclination; (b) a trailing blade supported by said head with the cutting edge of said blade aligned parallel to the longitudinal axis of said head; and (c) a plurality of leading blades carried by said head each having a cutting edge extending diagonally to said trailing blade at the same angular measure and each extending across the same percentage of said trailing blade's length, with said trailing blade cutting edge and each said leading blade cutting edge forming an included angle of about 15° to about 30° therebetween.
Claim 4
Dependent Claim
105 words
A razor comprising: (a) an elongated head for supporting a plurality of cutting blades at a predetermined inclination; (b) a trailing blade supported by said head with the cutting edge of said blade aligned parallel to the longitudinal axis of said head; and (c) a plurality of leading blades carried by said head each having a cutting edge extending diagonally to said trailing blade at the same angular measure and each extending across the same percentage of said trailing blade's length, with said trailing blade cutting edge and each said leading blade cutting edge forming an included angle of about 15° to about 30° therebetween.
References Cited (Backward Citations)
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |