Patent US3245501A successfully refreshed from Google Patents.
US3245501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuating means for shoe drum brakes
Assignee: Girling Ltd
•
Filing: 1964-06-04
•
Granted: 1966-04-12
•
Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 Dudley John Trevor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:27
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/22; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/22; F16D2125/28; F16D2125/30; F16D2125/58; F16D2125/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
AN INTERNAL SHOE DRUM BRAKE OF THE DUO-SERVO TYPE COMPRISING A ROTATABLE BRAKE DRUM, A STATIONARY BACKPLATE, ARCUATE SHOES MOUNTED ON SAID STATIONARY BACKPLATE AND CARRYING FRICTION LININGS FOR ENGAGEMENT WITH SAID DRUM, EACH SHOE HAVING A RADIAL WEB HAVING AN INNER SIDE ADJACENT THE BACK-PLATE AND AN OUTER SIDE, SAID SHOES HAVING ACTUATED AND NON-ACTUATED ENDS, FLOATING MEANS OPERATIVELY INTERCONNECTING THE NON-ACTUATED ENDS OF SAID BRAKE-SHOES, AN ANCHOR PIN MOUNTED ON THE BACK-PLATE BETWEEN THE ACTUATED ENDS OF THE SHOES AND FORMING AN ABUTMENT FOR ONE OF SAID ACTUATED SHOE ENDS IN THE APPLICATION OF THE BRAKE OF WHICH THE WEB OF THAT SHOE IS ADAPTED TO ENGAGE WITH SAID ANCHOR PIN, AN EXTENSION AN SAID ANCHOR PIN REMOTE FROM SAID BACK-PLATE A CAM ROTATABLY MOUNTED ON SAID EXTENSION TO SEPARATE SAID ACTUATED SHOE ENDS AND TO APPLY SAID SHOES TO SAID
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |