US5347716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety razors
Assignee: Gillette Co LLC
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Filing: 1993-05-27
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Granted: 1994-09-20
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Expires: 2013-05-27
Abstract
Abstract A safety razor in which at least part of the skin engaging surface thereof has an adherent coating comprising substantially spherical elastomeric particles in a polymer matrix, the size and concentration of such particles being such that the coated surface has a surface roughness with spaced major and subsidiary peaks.
Inventors
- 👤 Alan Crook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:54
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/4012; B26B21/4018; B26B21/4025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
A safety razor having one or more blades and skin engaging cap and guard surfaces, in which at least part of the skin engaging surface is provided with an adherent coating comprising substantially spherical elastomeric particles in a polymer matrix, the size and concentration of such particles being such that the coated surface has a surface roughness of 4 to 10 μm centre-line-average, with the spacing of the major peaks at 20 to 30 times the surface roughness and the spacing of the subsidiary peaks at 6 to 10 times the surface roughness.
Claim 2
Dependent Claim
93 words
A safety razor having one or more blades and skin engaging cap and guard surfaces, in which at least part of the skin engaging surface is provided with an adherent coating comprising substantially spherical elastomeric particles in a polymer matrix, the size and concentration of such particles being such that the coated surface has a surface roughness of 4 to 10 μm centre-line-average, with the spacing of the major peaks at 20 to 30 times the surface roughness and the spacing of the subsidiary peaks at 6 to 10 times the surface roughness.
Claim 3
Dependent Claim
23 words
A safety razor according to claim 1, in which at least 75 mm 2 of skin engaging surface is provided with said coating.
Claim 4
Dependent Claim
17 words
A safety razor according to claim 1, in which the coating is present on the guard surface.
Claim 5
Dependent Claim
68 words
A safety razor according to claim 1, in which said coating is formed by spraying the skin contacting surface with a texturising paint comprising substantially spherical elastomeric particles in an elastomeric polyurethane binder, the majority of the particles having a diameter less than 70 μm and the particles having a mean size of 30 μm, to form a dried coating having a thickness of 0.04 to 0.1 mm.
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) | 1997-09-19 | 1998-03-21 | 1998-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-19 | 2002-03-21 | 2002-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-19 | 2006-03-21 | 2006-09-20 | $7700.00 | Window Closed / Lapsed |