US3113643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuator for a sport type disc brake acting over a partial area of a disc brake friction pad, said area spaced circum-ferentially from the axis of the actuator
Assignee: Girling Ltd
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Filing: 1961-02-20
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Granted: 1963-12-10
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Expires: 1981-02-20
Abstract
No abstract record available.
Inventors
- 👤 Botterill John Redvers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D55/00; F16D55/02; F16D55/22; F16D55/228; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/095; F16D2055/0004; F16D2055/0016; F16D2055/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A DISC BRAKE COMPRISING A ROTATABLE DISC, A STATIONARY HOUSING STRADDLING A PORTION OF THE PERIPHERY OF THE DISC, A RIGID BACKING PLATE GUIDED IN SAID HOUSING FOR MOVEMENT THEREIN ONLY TOWARDS AND AWAY FROM THE DISC, A FRICTION PAD CARRIED BY SAID BACKING PLATE FOR ENGAGEMENT WITH THE DISC, AN HYDRAULIC CYLINDER IN THE HOUSING, THE AXIS OF THE CYLINDER BEING AT RIGHT ANGLES TO THE PLANE OF THE DISC, AND A PISTON WORKING IN THE CYLINDER AND ENGAGING THE BACKING PLATE ONLY OVER AN AREA WHICH IS OFFSET CIRCUMFERENTIALLY WITH RESPECT TO THE CENTER OF THE AREA OF THE FRICTION PAD IN A DIRECTION SUCH THAT THE CENTRE OF THE AREA OVER WHICH THE PISTON ENGAGES THE BACKING PLATE IS LOCATED ON THE SIDE OF THE AXIS OF THE CYLINDER OPPOSITE TO THAT WITH WHICH ANY GIVEN POINT ON THE DISC FIRST COMES INTO ALIGNMENT WHEN THE DISC IS ROTATING IN ITS NORMAL DIRECTION.
Claim 2
Dependent Claim
156 words
A DISC BRAKE COMPRISING A ROTATABLE DISC, A STATIONARY HOUSING STRADDLING A PORTION OF THE PERIPHERY OF THE DISC, A RIGID BACKING PLATE GUIDED IN SAID HOUSING FOR MOVEMENT THEREIN ONLY TOWARDS AND AWAY FROM THE DISC, A FRICTION PAD CARRIED BY SAID BACKING PLATE FOR ENGAGEMENT WITH THE DISC, AN HYDRAULIC CYLINDER IN THE HOUSING, THE AXIS OF THE CYLINDER BEING AT RIGHT ANGLES TO THE PLANE OF THE DISC, AND A PISTON WORKING IN THE CYLINDER AND ENGAGING THE BACKING PLATE ONLY OVER AN AREA WHICH IS OFFSET CIRCUMFERENTIALLY WITH RESPECT TO THE CENTER OF THE AREA OF THE FRICTION PAD IN A DIRECTION SUCH THAT THE CENTRE OF THE AREA OVER WHICH THE PISTON ENGAGES THE BACKING PLATE IS LOCATED ON THE SIDE OF THE AXIS OF THE CYLINDER OPPOSITE TO THAT WITH WHICH ANY GIVEN POINT ON THE DISC FIRST COMES INTO ALIGNMENT WHEN THE DISC IS ROTATING IN ITS NORMAL DIRECTION.
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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |