US5090124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Razor blade unit
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1991-02-19
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Granted: 1992-02-25
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Expires: 2011-02-19
Abstract
Abstract A razor blade unit includes a support member and at least one razor blade secured to the support member with a cutting edge extending from the support member. A wire is wrapped around at least a portion of the support member and the cutting edge of the razor blade with several space side-by-side windings traversing the cutting edge at an angle substantially perpendicular to the cutting edge. The strand is preferably a metal wire having a diameter of less than about 0.1 mm. The support member has grooves at its edges in which the wire is seated to prevent slip-page of the wire in a direction transversed to the edge of the blade.
Inventors
- 👤 Wolfgang Althaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:21
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/4006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
A razor blade unit for a safety razor, the unit comprising: a support member having a contact surface for engaging the skin during shaving, the contact surface having a leading edge region and a trailing edge region; at least one razor blade embedded in the support member and having a cutting edge extending from the contact surface of the support member intermediate said leading and trailing edge regions, the leading and trailing edge regions as well as the cutting edge of the razor blade being oriented for simultaneous engagement with the skin during shaving; and a plurality of spaced strands arranged along the contact surface and extending over the razor blade at an angle substantially perpendicular to the cutting edge, said strands covering spaced portions of the contact surface and the cutting edge of the razor blade and defining a plurality of uninterrupted exposure gaps on the contact surface that extend perpendicular to the cutting edge.
Claim 2
Dependent Claim
156 words
A razor blade unit for a safety razor, the unit comprising: a support member having a contact surface for engaging the skin during shaving, the contact surface having a leading edge region and a trailing edge region; at least one razor blade embedded in the support member and having a cutting edge extending from the contact surface of the support member intermediate said leading and trailing edge regions, the leading and trailing edge regions as well as the cutting edge of the razor blade being oriented for simultaneous engagement with the skin during shaving; and a plurality of spaced strands arranged along the contact surface and extending over the razor blade at an angle substantially perpendicular to the cutting edge, said strands covering spaced portions of the contact surface and the cutting edge of the razor blade and defining a plurality of uninterrupted exposure gaps on the contact surface that extend perpendicular to the cutting edge.
Claim 3
Dependent Claim
18 words
A razor blade unit as set forth in claim 1 wherein the strand portions are made of metal.
Claim 4
Dependent Claim
23 words
A razor blade unit as set forth in claim 1 wherein the strand portions are formed of a single wire having side-by-side windings.
Claim 5
Dependent Claim
31 words
A razor blade unit as set forth in claim 1 wherein the support member includes means for keeping the strand portions from sliding in a direction transverse to the cutting edge.
Claim 6
Dependent Claim
33 words
A razor blade unit as set forth in claim 4 wherein the means for keeping the strand portions from sliding includes grooves in the support member in which the strand portions are seated.
Claim 7
Dependent Claim
23 words
A razor blade unit as set forth in claim 1 wherein the strand portions have a diameter of less than about 0.1 mm.
References Cited (Backward Citations)
US1035548A
Cited
US3505734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |