US3308910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal shoe brake
Assignee: Ford Motor Co
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Filing: 1965-06-04
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Granted: 1967-03-14
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Scheffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:05
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
A BRAKE ASSEMBLY HAVING A BACKING PLATE AND A PAIR OF ARCUATE BRAKE SHOES MOVABLY CONNECTED TO SAID BACKING PLATE; AN ANNULAR BRAKE DRUM ROTATABLY DISPOSED WITH RESPECT TO SAID BRAKE SHOES; SAID SHOES HAVING FIRST AND SECOND ADJACENT ENDS; AN ANCHOR SECURED TO SAID BACKING PLATE; FIRST SPRING MEANS URGING SAID FIRST ENDS INTO ENGAGEMENT WITH SAID ANCHOR; BRAKE APPLYING MEANS ADAPTED TO MOVE SAID SHOES INTO ENGAGEMENT WITH SAID DRUM; A LINK MEANS INTERCONNECTING SAID SECOND ENDS; A RATCHET WHEEL ROTATABLY CONNECTED TO SAID LINK MEANS; SAID RATCHET WHEEL HAVING A PROGRESSIVELY INCREASING DIAMETER; THE SECOND END OF SAID OTHER SHOE HAVING A PORTION ENGAGING THE PERIPHERY OF SAID RATCHET WHEEL; SECOND SPRING MEANS HAVING ONE END CONSTRUCTED TO URGE SAID RATCHET WHEEL TO ROTATE; SAID SECOND SPRING MEANS ALSO BEING CONSTRUCTED TO URGE SAID OTHER SHOE INTO ENGAGEMENT WITH SAID RATCHET WHEEL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |