US4016648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety razor
Assignee: Warner Lambert Co LLC
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Filing: 1975-08-13
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Granted: 1977-04-12
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Expires: 1995-08-13
Abstract
Abstract A safety razor comprises a blade seat member having a transversely elongated guard surface, and a first plurality of upwardly extending support posts. A first razor blade is situated on the blade seat member with a cutting edge spaced upwardly and rearwardly of the guard surface. A plurality of perforations are formed in the first blade and the first plurality of support posts extend upwardly through the perforations. A second razor blade is positioned above the first blade in abutting engagement with the top surfaces of the first plurality of support posts. The second blade includes a cutting edge spaced upwardly and rearwardly of the cutting edge of the first blade, and a plurality of perforations formed therethrough. A cap member is positioned above the second blade, and includes a second plurality of support posts extending downwardly through the perforations in the second blade and in abutting engagement with the top surface of the first blade. The cap and blade seat members are interconnected for permanently bonding the first and second blades between the cap and blade seat members.
Inventors
- 👤 Evan Nai-keung Chen
- 👤 Edward A. Beddall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:52
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/22; B26B21/222
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
221 words
A safety razor comprising: a. a plastic blade seat member including a transversely elongated guard surface, a platform and a first plurality of integral support posts having lands thereon and extending from said platform; b. a first razor blade on said blade seat platform member, said first blade including a cutting edge spaced upwardly and rearwardly of said guard surface, and a plurality of perforations formed therethrough, said first plurality of support posts extending through the perforations in said first blade; c. a second razor blade in abutting engagement with said lands of said first plurality of support posts, said second blade including a cutting edge spaced upwardly and rearwardly of the cutting edge of said first blade, and a plurality of perforations formed therethrough; d. a plastic cap member on said second blade, said cap member including a surface for supporting said second blade, a second plurality of integral support posts having lands thereon extending from said support surface through the perforations in said second blade, said cap post lands in abutting engagment with the top surface of said first blade; and e. means interconnecting said cap and blade seat members for permanently bonding said first and second blades between said cap post lands and blade seat platform and said blade seat post lands and said cap support surface respectively.
Claim 2
Dependent Claim
221 words
A safety razor comprising: a. a plastic blade seat member including a transversely elongated guard surface, a platform and a first plurality of integral support posts having lands thereon and extending from said platform; b. a first razor blade on said blade seat platform member, said first blade including a cutting edge spaced upwardly and rearwardly of said guard surface, and a plurality of perforations formed therethrough, said first plurality of support posts extending through the perforations in said first blade; c. a second razor blade in abutting engagement with said lands of said first plurality of support posts, said second blade including a cutting edge spaced upwardly and rearwardly of the cutting edge of said first blade, and a plurality of perforations formed therethrough; d. a plastic cap member on said second blade, said cap member including a surface for supporting said second blade, a second plurality of integral support posts having lands thereon extending from said support surface through the perforations in said second blade, said cap post lands in abutting engagment with the top surface of said first blade; and e. means interconnecting said cap and blade seat members for permanently bonding said first and second blades between said cap post lands and blade seat platform and said blade seat post lands and said cap support surface respectively.
Claim 3
Dependent Claim
23 words
The cartridge of claim 1 wherein the surfaces of said first and second pluralities of lands adjacent to said cutting edges are beveled.
Claim 4
Dependent Claim
30 words
The cartridge of claim 1 wherein a plurality of ports are formed in the rear of said cartridge and in communication with the space between said first and second blades.
Claim 5
Dependent Claim
50 words
The cartridge of claim 1 wherein said blade seat member includes a plurality of holes, and wherein said bonding means comprises a plurality of posts extending downwardly from said cap member through the holes in said seat member, said posts being deformed at the lower ends thereof to prevent removal.
Claim 6
Dependent Claim
21 words
The cartridge of claim 1 wherein said first and second pluralities of lands are transversely and alternately spaced along the cartridge.
Claim 7
Dependent Claim
30 words
The cartridge of claim 1 wherein said first and second pluralities of lands each include frangible surfaces for abutting engagement with the respective one of said first and second blades.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |