US3903597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry shavers
Assignee: Braun GmbH
•
Filing: 1973-11-12
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Granted: 1975-09-09
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Expires: 1993-11-12
Abstract
Abstract A dry shaver having a cutting foil of a cylinder surface configuration. In the interior of said cutting foil a reciprocable cutter head is arranged which is in driving connection with a motor that is also housed in said interior. Opposite said cutter head at least one biasing roller is arranged for urging said cutting foil in intimate contact with said cutter head. The motor has its shaft parallel to a generatrix of the surface of said cutting foil, and the shaft ends of the motor each carry a cam disc, each of which is cooperating with a coordinated reciprocable arm, which arms extend normally to the shaft of said motor and are coupled at their freely movable end to the cutter head.
Inventors
- 👤 Claus Christian Cobarg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:14
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/28; B26B19/282; B26B19/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
In a dry shaver, in combination, a first member including a rotatable, endless, flexible belttype perforated cutting screen; a second member including a shearing head positioned in operative contact with at least a portion of said screen; suspending means operable for suspending the screen rotatably; said suspending means comprising a roller means incluDing at least one roller and being operable, in combination with said second member, for maintaining said cutting screen in a circumferentially extended position by suspending the screen non-circularly; and reciprocating means operable for reciprocably moving one of said members relative to the other a holding means; said roller means being pivotally suspended from said holding means, a casing; said holding means including a cantilever operable for pivotally securing said holding means to said casing.
Claim 2
Dependent Claim
127 words
In a dry shaver, in combination, a first member including a rotatable, endless, flexible belttype perforated cutting screen; a second member including a shearing head positioned in operative contact with at least a portion of said screen; suspending means operable for suspending the screen rotatably; said suspending means comprising a roller means incluDing at least one roller and being operable, in combination with said second member, for maintaining said cutting screen in a circumferentially extended position by suspending the screen non-circularly; and reciprocating means operable for reciprocably moving one of said members relative to the other a holding means; said roller means being pivotally suspended from said holding means, a casing; said holding means including a cantilever operable for pivotally securing said holding means to said casing.
Claim 3
Dependent Claim
25 words
A dry shaver according to claim 1, wherein said cantilever is pivotally attached to the casing at right angles to the shaft of the motor.
Claim 4
Dependent Claim
94 words
In a dry shaver, in combination, a rotatable, endless, flexible cutting screen; suspending means operable for suspending the screen rotatably; a shearing head positioned in operative contact with at least a portion of said screen; reciprocating means comprising a drive motor surrounded by said screen having a shaft the axis of which is substantially parallel to the axis of said screen, and cam and cam follower means driven from said motor; said cam follower being operably coupled to said shearing head whereby reciprocating motion is transmitted from said reciprocating means to said shearing head.
Claim 5
Dependent Claim
94 words
In a dry shaver, in combination, a rotatable, endless, flexible cutting screen; suspending means operable for suspending the screen rotatably; a shearing head positioned in operative contact with at least a portion of said screen; reciprocating means comprising a drive motor surrounded by said screen having a shaft the axis of which is substantially parallel to the axis of said screen, and cam and cam follower means driven from said motor; said cam follower being operably coupled to said shearing head whereby reciprocating motion is transmitted from said reciprocating means to said shearing head.
Claim 6
Dependent Claim
51 words
In a dry shaver as claimed in claim 3, said cam follower means including a first member comprising at least one reciprocable arm; and a second member operably coupled to said reciprocable arm and to said shearing head whereby reciprocable motion of said arm will be transmitted to said second member.
Claim 7
Dependent Claim
34 words
In a dry shaver as claimed in claim 4, said first member comprising two substantially parallel reciprocable arms, each coupled to said second member, and two cams each corresponding to one of said arms.
Claim 8
Dependent Claim
34 words
In a dry shaver as claimed in claim 4, wherein said second member further comprises a beam, said shearing head being coupled to said beam and said reciprocable arm being coupled to said beam.
Claim 9
Dependent Claim
22 words
A dry shaver according to claim 6, wherein the shearing head is coupled to said beam by means of a compression spring.
Claim 10
Dependent Claim
17 words
A dry shaver according to claim 3, wherein the cam follower is biased towards its respective cam.
Claim 11
Dependent Claim
32 words
A dry shaver according to claim 3, wherein the drive motor is supported resiliently in an axial direction such as to counter-balance the masses of all moving parts of the dry shaver.
Claim 12
Dependent Claim
14 words
A dry shaver according to claim 1, wherein the reciprocable arms are leaf springs.
References Cited (Backward Citations)
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |