Patent US4163316A successfully refreshed from Google Patents.
US4163316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety razor
Assignee: METRO-FER AG
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Filing: 1978-01-17
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Granted: 1979-08-07
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Expires: 1998-01-17
Abstract
Abstract A safety razor intended to be discarded after use, comprising a cutting head and a handle. The cutting head includes two oppositely disposed longitudinal surfaces with cutting edges disposed thereon. In order that both cutting edges may be used, the cutting head is rotatably disposed in an extension piece adjoining the handle.
Inventors
- 👤 Peter Hagmann
- 👤 Ernst Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:14
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/52; B26B21/521; B26B21/528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A safety razor comprising a cutting head having two oppositely disposed longitudinal surfaces and at least one cutting edge on each of said surfaces, a cutting head holder joining said cutting head, a handle, an angled extension piece joining said handle and including a recess formed at one end of said extension piece receiving said holder, cooperating means on said holder and within said recess for securing said holder against axial displacement relative to said extension piece, said holder having two parallel outer surfaces and said recess having complementary parallel surfaces which engage said outer surfaces of said holder to locate said holder circumferentially in said recess in one of two operating positions separated by 180°, and at least one of said holder and said extension piece being made of resilient material whereby said holder can be rotated in said recess between said operating positions.
Claim 2
Dependent Claim
145 words
A safety razor comprising a cutting head having two oppositely disposed longitudinal surfaces and at least one cutting edge on each of said surfaces, a cutting head holder joining said cutting head, a handle, an angled extension piece joining said handle and including a recess formed at one end of said extension piece receiving said holder, cooperating means on said holder and within said recess for securing said holder against axial displacement relative to said extension piece, said holder having two parallel outer surfaces and said recess having complementary parallel surfaces which engage said outer surfaces of said holder to locate said holder circumferentially in said recess in one of two operating positions separated by 180°, and at least one of said holder and said extension piece being made of resilient material whereby said holder can be rotated in said recess between said operating positions.
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) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |