US3793724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A dryshaver with an adjustable protective sleeve
Assignee: Braun GmbH
•
Filing: 1972-06-07
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Granted: 1974-02-26
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Expires: 1992-06-07
Abstract
Abstract A dryshaver has a rod-shaped housing provided at one end with a shear head which is driven by an electromotor. A protective sleeve surrounds a portion of the housing and can be axially displaced between two positions in one of which it is retracted rearwardly of the shear head and in the other of which it projects forwardly of the shear head to protect the same. An actuator button of a switch for the current supply to the motor is interconnected with the sleeve to prevent the same from being withdrawn off the housing and is displaced in response to shifting of the sleeve to circuit making or breaking.
Inventors
- 👤 W Messinger
- 👤 K Zimmerman
- 👤 F Seiffert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:06
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/38; B26B19/3806; B26B19/3813; B26B19/382; B26B19/3853
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
In a dryshaver, a combination comprising a housing having a circumferentially extending shoulder; a shear head on said housing and adapted for engagement with the skin of a user to shave hair from the skin; a drive in said housing and operatively associated with said shear head for driving the same; a protective sleeve on said housing and having an axial endface which faces towards said shoulder, said sleeve being movable between at least an advanced position in which it projects beyond and protects said shear head, and a retracted position in which it is retracted from and exposes said shear head for engagement; and means operative for arresting said sleeve in at least said advanced position thereof, including a resiliently yieldable clip removably surrounding said housing intermediate said shoulder and said endface.
Claim 2
Dependent Claim
133 words
In a dryshaver, a combination comprising a housing having a circumferentially extending shoulder; a shear head on said housing and adapted for engagement with the skin of a user to shave hair from the skin; a drive in said housing and operatively associated with said shear head for driving the same; a protective sleeve on said housing and having an axial endface which faces towards said shoulder, said sleeve being movable between at least an advanced position in which it projects beyond and protects said shear head, and a retracted position in which it is retracted from and exposes said shear head for engagement; and means operative for arresting said sleeve in at least said advanced position thereof, including a resiliently yieldable clip removably surrounding said housing intermediate said shoulder and said endface.
Claim 3
Dependent Claim
80 words
A combination as defined in claim 1, said housing having a first and an axially adjacent second position of respectively lesser and greater outer diameter, said shoulder being provided at the juncture of said portion and said shear head being provided on said first portion; said clip being a circlip which surrounds said first portion intermediate said shoulder and said endface; and said sleeve surrounding said first portion and having an outer diameter corresponding to that of said second portion.
Claim 4
Dependent Claim
36 words
A combination as defined in claim 2, wherein said housing is elongated and bar-shaped, having a free end-portion; said shear head being provided on said free end-portion and said sleeve being concentric with said shear head.
Claim 5
Dependent Claim
27 words
A combination as defined in claim 2, wherein said sleeve is mounted on said housing for sliding movement relative to the same and to said shear head.
Claim 6
Dependent Claim
18 words
A combination as defined in claim 2, wherein said housing and said sleeve are of circular cross-sectional configuration.
Claim 7
Dependent Claim
53 words
A combination as defined in claim 1, said sleeve having an inner circumferential surface provided with at least two recesses; and wherein said means comprises resiliently yieldable means adapted to engage in one or the other of said recesses depending upon said sleeve being located in said advanced or in said retracted position.
Claim 8
Dependent Claim
76 words
A combination as defined in claim 1, said drive including an electrical motor and a switch displaceable between a make and a break condition for respectively energizing and de-energizing said motor; and wherein said means comprises an actuating portion associated with said switch for displacing the same to said make condition in response to movement of said sleeve to retracted position, and to said break condition in response to movement of said sleeve to advanced position.
Claim 9
Dependent Claim
21 words
A combination as defined in claim 2; further comprising brush means provided on said circlip for cleaning of said shear head.
Claim 10
Dependent Claim
16 words
A combination as defined in claim 8, wherein said brush means is unitary with said circlip.
Claim 11
Dependent Claim
32 words
A combination as defined in claim 8, wherein said brush means is a discrete component; and further comprising holding portions on said circlip for removably holding said discrete component to said circlip.
References Cited (Backward Citations)
US2880504A
Cited
US3538604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |