US5074042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaver head with swivelling blade block
Assignee: WLIKINSON SWORD A CORP OF GERMANY GmbH
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Filing: 1990-08-31
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Granted: 1991-12-24
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Expires: 2010-08-31
Abstract
Abstract The invention relates to a shaver head for a wet shaver. The shaver head is arranged at the front end of a handle. A razor blade, in the form of a single or double razor blade, is mounted in the shaver head. The shaver head has a guide strip parallel to and in front of the cutting edges of the razor blades. To achieve a variation of the shaving angle and thus the cutting geometry in a technically simple fashion, the razor blades are arranged in a blade block which is swivelably mounted in relation to the remainder of the body of the shaver head. The blade block is able to swivel freely against a spring force about a swivelling axis parallel to the cutting edges of the blades.
Inventors
- 👤 Wolfgang Althaus
- 👤 Michael Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:48
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/22; B26B21/222; B26B21/227
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
155 words
A shaver head for a wet shaver, comprising: at least one razor blade having a cutting edge; a plastic body including a guide strip and a plastic blade block for supporting said at least one razor blade, said blade block being swivelably mounted in relation to the remainder of the body and including a cover cap portion above said at least one razor blade and a swivelling axis extending through the cover cap portion parallel to the cutting edge; and at least one spring disposed between the blade block and the remainder of the body in a region proximate to said at least one razor blade, for biasing the blade block relative to the remainder of the body and for permitting the blade block to swivel against the spring about the swivelling axis, to change the cutting geometry and shaving angle in response to the force exerted on the shaver by a user during shaving.
Claim 2
Dependent Claim
155 words
A shaver head for a wet shaver, comprising: at least one razor blade having a cutting edge; a plastic body including a guide strip and a plastic blade block for supporting said at least one razor blade, said blade block being swivelably mounted in relation to the remainder of the body and including a cover cap portion above said at least one razor blade and a swivelling axis extending through the cover cap portion parallel to the cutting edge; and at least one spring disposed between the blade block and the remainder of the body in a region proximate to said at least one razor blade, for biasing the blade block relative to the remainder of the body and for permitting the blade block to swivel against the spring about the swivelling axis, to change the cutting geometry and shaving angle in response to the force exerted on the shaver by a user during shaving.
Claim 3
Dependent Claim
35 words
The shaver head of claim 1, wherein the blade block includes two outside surfaces generally converging at a vertex and the swivelling axis extends through the cover cap in a region proximate to the vertex.
Claim 4
Dependent Claim
35 words
The shaver head of claim 1, wherein the blade block includes two outside surfaces generally converging at a vertex and the swivelling axis extends through the cover cap essentially in a region below the vertex.
Claim 5
Dependent Claim
29 words
The shaver head of claim 1, wherein the body includes a pair of side walls and said blade block is mounted swivelably in the side walls of the body.
Claim 6
Dependent Claim
41 words
The shaver head of claim 4, wherein the blade block has a pair of lateral pins which form the swivelling axis, and each of the side walls include a recess therein, wherein the lateral pins are swivelably mounted within said recesses.
Claim 7
Dependent Claim
48 words
The shaver head of claim 4, wherein the side walls of the body each include an inner surface and the blade block includes a pair of lateral wings each having an outer surface, the outer surfaces forming together with the inner surfaces, guide surfaces for the swivelling movement.
Claim 8
Dependent Claim
28 words
The shaver head of claim 6, wherein a stop is constructed between each of the lateral wings of the blade block and the side walls of the body.
Claim 9
Dependent Claim
20 words
The shaver head of claim 1, wherein at least one stop is provided between the blade block and the body.
Claim 10
Dependent Claim
22 words
The shaver head of claim 1, wherein the guide strip comprises a friction reducing polymeric slide strip parallel to the cutting edge.
Claim 11
Dependent Claim
20 words
The shaver head of claim 1, wherein the at least one razor blade is permanently embedded in the blade block.
References Cited (Backward Citations)
US3593416A
Cited
DE2421662A1
Cited
US3955277A
Cited
US4026016A
Cited
DE3019399A1
Cited
US4335508A
Cited
EP0045879A1
Cited
US4442598A
Cited
DE3218411A1
Cited
US4715120A
Cited
US4461079A
Cited
US4574476A
Cited
US4709477A
Cited
US4774765A
Cited
US4709477B1
Cited
US4693003A
Cited
US4813131A
Cited
US4777722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |