Patent US3089565A successfully refreshed from Google Patents.
US3089565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brakes
Assignee: Dunlop Rubber Co Ltd
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Filing: 1960-05-25
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Granted: 1963-05-14
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Expires: 1980-05-25
Abstract
No abstract record available.
Inventors
- 👤 Butler Henry James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:21
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/228; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/095; F16D2055/0004; F16D2055/0008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A DISC BRAKE COMPRISING A ROTATABLE DISC, A NONROTATABLE STRUCTURE COMPRISING A PAIR OF BASE MEMBERS POSITIONED ON OPPOSITE SIDE OF SAID DISC IN A COMMON PLANE CHORDWISE OF SAID DISC, INDIVIDUAL CONNECTOR MEANS RIGIDLY SECURING SAID BASE MEMBERS TOGETHER AT THEIR ENDS BEYOND THE PERIPHERY OF SAID DISC, A SIDE SUPPORT RIGIDLY MOUNTED ON EACH OF SAID BASE SUPPORTS AND EXTENDING OVER AND BEYOND THE SEGMENT OF SAID DISC RADIALLY OUTWARDLY OF SAID BASE MEMBERS, MEANS JOINING SAID SIDE SUPPORTS BEYOND THE PERIPHERY OF SAID DISC, EACH SAID SIDE SUPPORT HAVING A CYLINDRICAL RECESS FORMED THEREIN CO-AXIALLY WITH THE CYLINDRICAL RECESS OF THE OPPOSITE SIDE MEMBER, A PISTON SLIDABLE IN EACH SAID RECESS TOWARD AND FROM SAID DISC AND A FRICTION ELEMENT BETWEEN EACH SAID PISTON AND SAID DISC TO BE MOVED UNDER PRESSURE BY SAID PISTON INTO FRICTIONAL CONTACT WITH THE RADIAL SURFACE OF SAID DISC.
Claim 2
Dependent Claim
148 words
A DISC BRAKE COMPRISING A ROTATABLE DISC, A NONROTATABLE STRUCTURE COMPRISING A PAIR OF BASE MEMBERS POSITIONED ON OPPOSITE SIDE OF SAID DISC IN A COMMON PLANE CHORDWISE OF SAID DISC, INDIVIDUAL CONNECTOR MEANS RIGIDLY SECURING SAID BASE MEMBERS TOGETHER AT THEIR ENDS BEYOND THE PERIPHERY OF SAID DISC, A SIDE SUPPORT RIGIDLY MOUNTED ON EACH OF SAID BASE SUPPORTS AND EXTENDING OVER AND BEYOND THE SEGMENT OF SAID DISC RADIALLY OUTWARDLY OF SAID BASE MEMBERS, MEANS JOINING SAID SIDE SUPPORTS BEYOND THE PERIPHERY OF SAID DISC, EACH SAID SIDE SUPPORT HAVING A CYLINDRICAL RECESS FORMED THEREIN CO-AXIALLY WITH THE CYLINDRICAL RECESS OF THE OPPOSITE SIDE MEMBER, A PISTON SLIDABLE IN EACH SAID RECESS TOWARD AND FROM SAID DISC AND A FRICTION ELEMENT BETWEEN EACH SAID PISTON AND SAID DISC TO BE MOVED UNDER PRESSURE BY SAID PISTON INTO FRICTIONAL CONTACT WITH THE RADIAL SURFACE OF SAID DISC.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |