US4245388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety razor
Assignee: Individual
•
Filing: 1977-12-19
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Granted: 1981-01-20
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Expires: 1997-12-19
Abstract
Abstract The specific disclosure provides a safety razor comprising a cap member having a planar skin abutting upper surface defining a first plane for guiding the shaver over skin surfaces while shaving. A blade has a cutting edge at one end thereof in a second plane and extends from beneath the cap member. The first and second planes intersect at an angle of between about 15° to about 25°. A blade seat member is located beneath the blade and has a blade seat surface in contact with the blade and a plurality of spaced elements extending outwardly from beneath the cutting edge.
Inventors
- 👤 Jan Dawidowicz
- 👤 John D. Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:00
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/16; B26B21/165
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
145 words
A safety razor comprising: a cap member having a planar skin abutting upper surface for guiding said razor over skin surfaces, said cap upper surface defining a first plane; a blade having a cutting edge at one end thereof in a second plane, said cutting edge extending forwardly from beneath said cap member; said first and second planes intersecting at an angle of about 15° to about 25°; and a blade seat member located beneath said blade and including means extending forwardly from beneath said cutting edge for guarding skin surfaces from said cutting edge; said skin guarding means being oriented with respect to said cap upper surface to permit said cutting edge to contact skin surfaces only when said cap upper surface is in contact with such skin surfaces, and said skin guarding means being in contact, at spaced intervals, with said cutting edge.
Claim 2
Dependent Claim
145 words
A safety razor comprising: a cap member having a planar skin abutting upper surface for guiding said razor over skin surfaces, said cap upper surface defining a first plane; a blade having a cutting edge at one end thereof in a second plane, said cutting edge extending forwardly from beneath said cap member; said first and second planes intersecting at an angle of about 15° to about 25°; and a blade seat member located beneath said blade and including means extending forwardly from beneath said cutting edge for guarding skin surfaces from said cutting edge; said skin guarding means being oriented with respect to said cap upper surface to permit said cutting edge to contact skin surfaces only when said cap upper surface is in contact with such skin surfaces, and said skin guarding means being in contact, at spaced intervals, with said cutting edge.
Claim 3
Dependent Claim
11 words
The razor of claim 1 wherein said angle is about 18°.
Claim 4
Dependent Claim
31 words
The razor of claim 1 wherein said cutting edge is located rearwardly of a plane extending from the forward end of said cap upper surface tangent to said skin guarding means.
Claim 5
Dependent Claim
18 words
The razor of claim 1 wherein said skin guarding means comprises a plurality of spaced forwardly extending elements.
Claim 6
Dependent Claim
18 words
The razor of claim 4 wherein each one of said elements is in contact with said cutting edge.
Claim 7
Dependent Claim
41 words
The razor of claim 4 wherein said cutting edge is formed by an upper and lower converging surface, and wherein each of said elements has an upwardly sloped ramp surface in abutting engagement with said lower surface forming said cutting edge.
Claim 8
Dependent Claim
26 words
The razor of claim 4 wherein each one of said elements has a surface extending outwardly and downwardly in a plane parallel to said first plane.
Claim 9
Dependent Claim
39 words
The razor of claim 7 wherein said elements are oriented with respect to said cap upper surface to prevent said cutting edge from contacting skin surfaces when said cap upper surface is out of contact with such skin surfaces.
Claim 10
Dependent Claim
100 words
The razor of claim 1 wherein said blade seat member includes a plurality of downwardly extending perforations, and a tab member extending into each of said blade seat perforations; and wherein said cap member includes a plurality of posts extending downwardly through said blade seat perforations, each of said posts having an outwardly extending lip surface, said posts having a vertical dimension to prevent said lip surfaces from engaging the undersides of said tab members when said cap members is located on said blade, and said tab members being upwardly deformed to seat the undersides thereof on said lip portions.
Claim 11
Dependent Claim
20 words
The razor of claim 9 wherein said blade is perforated, and wherein said posts extend downwardly through said perforated blade.
Claim 12
Dependent Claim
62 words
The razor of claim 1 wherein said blade seat member includes a pair of spaced stop surfaces and a plurality of upwardly and rearwardly sloped elements, wherein the outer ends of said cutting edge are in abutting engagement with said stop surfaces, and wherein said blade includes rearwardly facing portions imbedded in said sloped elements to prevent rearward movement of said blade.
Claim 13
Dependent Claim
69 words
The razor of claim 1 wherein said cap member is integrally formed of metal and comprises a forwardly and downwardly biased top member in abutting engagement with the upper surface of said blade, a pair of spaced forwardly extending and upwardly biased bottom members in abutting engagement with the underside of said blade seat member, and a rear portion interconnecting said top member and said pair of bottom members.
Claim 14
Dependent Claim
40 words
The razor of claim 1 further comprising an elongated handle extending downwardly from said blade seat member, said handle being oriented with respect to said upper cap surface to facilitate maintaining said upper cap surface in contact with skin surfaces.
Claim 15
Dependent Claim
161 words
A safety razor comprising: a cap member having a planar skin abutting upper surface for guiding said razor over skin surfaces, said cap upper surface defining a first plane; a blade having a cutting edge at one end thereof in a second plane, said cutting edge extending forwardly from beneath said cap member; said first and second planes intersecting at an angle of about 15° to about 25°; a blade seat member located beneath said blade and including means extending forwardly from beneath said cutting edge for guarding skin surfaces from said cutting edge; said skin guarding means including a plurality of forwardly extending elements, each one of said elements having a surface extending outwardly and downwardly in a plane parallel to said first plane; and said skin guarding means being oriented with respect to said cap upper surface to permit said cutting edge to contact skin surfaces only when said cap upper surface is in contact with such skin surfaces.
Claim 16
Dependent Claim
161 words
A safety razor comprising: a cap member having a planar skin abutting upper surface for guiding said razor over skin surfaces, said cap upper surface defining a first plane; a blade having a cutting edge at one end thereof in a second plane, said cutting edge extending forwardly from beneath said cap member; said first and second planes intersecting at an angle of about 15° to about 25°; a blade seat member located beneath said blade and including means extending forwardly from beneath said cutting edge for guarding skin surfaces from said cutting edge; said skin guarding means including a plurality of forwardly extending elements, each one of said elements having a surface extending outwardly and downwardly in a plane parallel to said first plane; and said skin guarding means being oriented with respect to said cap upper surface to permit said cutting edge to contact skin surfaces only when said cap upper surface is in contact with such skin surfaces.
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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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |