US3851392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaving unit for safety razor
Assignee: Warner Lambert Co LLC
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Filing: 1973-12-13
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Granted: 1974-12-03
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Expires: 1993-12-13
Abstract
Abstract The specific disclosure provides a shaving unit having two superimposed double edge razor blades with the cutting edges of the top blade being set back a slight distance from the cutting edges of the bottom blade. An elongated slot extends through the blades for locating the shaving unit in a double edge safety razor. Means are provided between the aperture and the cutting edges to each side of the aperture for permanently connecting the blades together. In one embodiment, a spacer is permanently positioned between the blades.
Inventors
- 👤 W Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:36
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/54; B26B21/08; B26B21/14; B26B21/22
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
227 words
A shaving unit for a double edge safety razor, said shaving unit comprising: a. a first flexible member including a pair of transversely extending opposite sides, each one of the first member opposite sides having a cutting edge, and a pair of spaced end tabs, each one of said tabs extending outwardly from an opposite end of said first member: b. a second flexible member including a pair of transversely extending opposite sides, each one of the second member opposite sides having a cutting edge, and a pair of spaced end tabs, each one of said tabs extending outwardly from an opposite end of said second member, said second member being positioned above said first member with the cutting edges of said second member being positioned upwardly and outwardly of the cutting edges of said first member; c. a transversely elongated aperture between said tabs of said first member and said second member and vertically extending through said shaving unit for locating said shaving unit in said safety razor; and d. means solely between said aperture and the cutting edges to each side of said aperture for permanently connecting said first member and said second member together; e. whereby said first member and said second member are connected together at substantially flat surfaces, and said tabs are curved when said unit is seated in said safety razor.
Claim 2
Dependent Claim
227 words
A shaving unit for a double edge safety razor, said shaving unit comprising: a. a first flexible member including a pair of transversely extending opposite sides, each one of the first member opposite sides having a cutting edge, and a pair of spaced end tabs, each one of said tabs extending outwardly from an opposite end of said first member: b. a second flexible member including a pair of transversely extending opposite sides, each one of the second member opposite sides having a cutting edge, and a pair of spaced end tabs, each one of said tabs extending outwardly from an opposite end of said second member, said second member being positioned above said first member with the cutting edges of said second member being positioned upwardly and outwardly of the cutting edges of said first member; c. a transversely elongated aperture between said tabs of said first member and said second member and vertically extending through said shaving unit for locating said shaving unit in said safety razor; and d. means solely between said aperture and the cutting edges to each side of said aperture for permanently connecting said first member and said second member together; e. whereby said first member and said second member are connected together at substantially flat surfaces, and said tabs are curved when said unit is seated in said safety razor.
Claim 3
Dependent Claim
27 words
The shaving unit of claim 2 wherein said flexible connecting means comprises means for bonding said spacing means to said first member and to said second member.
Claim 4
Dependent Claim
20 words
The shaving unit of claim 3 wherein the cutting edges of said first member and said second member are parallel.
Claim 5
Dependent Claim
16 words
The shaving unit of claim 4 wherein said first and second members are flexible, metallic members.
Claim 6
Dependent Claim
15 words
The shaving unit of claim 5 wherein said spacing means is a flexible, metallic element.
Claim 7
Dependent Claim
16 words
The shaving unit of claim 6 wherein said connecting means comprises a plurality of spot welds.
Claim 8
Dependent Claim
19 words
The shaving unit of claim 6 wherein said first and second members are double cutting edge safety razor blades.
Claim 9
Dependent Claim
22 words
The shaving unit of claim 1 wherein said connecting means comprises means for bonding said second member directly to said first member.
Claim 10
Dependent Claim
20 words
The shaving unit of claim 9 wherein the cutting edges of said first member and said second member are parallel.
Claim 11
Dependent Claim
16 words
The shaving unit of claim 10 wherein said first and second members are flexible, metallic members.
Claim 12
Dependent Claim
16 words
The shaving unit of claim 11 wherein said connecting means comprises a plurality of spot welds.
Claim 13
Dependent Claim
19 words
The shaving unit of claim 12 wherein said first and second members are double cutting edge safety razor blades.
Claim 14
Dependent Claim
19 words
The shaving unit of claim 1 wherein said first and second mEmbers are double cutting edge safety razor blades.
References Cited (Backward Citations)
US1975757A
Cited
GB772532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |