Patent US1464726A successfully refreshed from Google Patents.
US4128941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheathed razor blade
Assignee: American Safety Razor Co
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Filing: 1977-09-22
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Granted: 1978-12-12
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Expires: 1997-09-22
Abstract
Abstract A sheathed razor blade in which a folded film sheath embraces the blade, with the fold in general registration with the cutting edge of the blade; the folded film sheath overlapping the sides of the blade; the overlap of the folded film sheath bonded together to form a relatively stiff, lateral two ply enlargement beyond the side of the blade for removing the sheath.
Inventors
- 👤 Earle T. Holsapple, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:29
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/54; B29; B29C; B29C2793/00; B29C2793/009; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/70; B29C66/71; B29K; B29K2101/00; B29K2101/12; B29L; B29L2031/00; B29L2031/718; B29L2031/7186
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A sheathed razor blade comprising: a. a razor blade having a cutting edge, b. a folded sheet covering the portion of both sides of the razor blade adjacent to the cutting edge, c. the fold of the sheath in general registration with the cutting edge of the blade, d. portions of the sheath extending laterally perpendicular to and beyond sides of the razor blade adjacent to the cutting edge, defining a small perpendicular tab at the sides of the blade, enabling the sheath to be picked off, e. the portions of the sheath extending beyond the sides of the blade adjacent to the edge overlapped at least in part with each other, f. the overlapped portions of the sheet at the sides adjacent to the cutting edge adhered to each other.
Claim 2
Dependent Claim
131 words
A sheathed razor blade comprising: a. a razor blade having a cutting edge, b. a folded sheet covering the portion of both sides of the razor blade adjacent to the cutting edge, c. the fold of the sheath in general registration with the cutting edge of the blade, d. portions of the sheath extending laterally perpendicular to and beyond sides of the razor blade adjacent to the cutting edge, defining a small perpendicular tab at the sides of the blade, enabling the sheath to be picked off, e. the portions of the sheath extending beyond the sides of the blade adjacent to the edge overlapped at least in part with each other, f. the overlapped portions of the sheet at the sides adjacent to the cutting edge adhered to each other.
Claim 3
Dependent Claim
19 words
A sheathed razor blade comprising: a. the device according to claim 1, b. the sheath of polyvinyl chloride film.
Claim 4
Dependent Claim
19 words
A sheathed razor blade comprising: a. the device according to claim 1, b. the sheath composed of plastic material.
Claim 5
Dependent Claim
19 words
A sheathed razor blade comprising: a. the device according to claim 1, b. the sheath composed of thermoplastic material.
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) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |