US3255849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parking brake
Assignee: ZF Active Safety US Inc
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Filing: 1964-04-20
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Granted: 1966-06-14
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
F; F16; F16D; F16D51/00; F16D51/46; F16D51/48; F16D65/00; F16D65/02; F16D65/04; F16D65/08; F16D65/09; F16D65/091; F16D2125/00; F16D2125/18; F16D2125/58; F16D2125/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A BRAKE MECHANISM COMPRISING A PAIR OF BRAKE SHOES HAVING WEBS, AND A BRAKE DRUM, THAT IMPROVEMENT WHICH COMPRISES, A BRAKE ACTUATING LEVER, MEANS FOR LOOSELY FULCRUMING ONE END OF SAID LEVER ON THE WEB OF ONE OF SAID BRAKE SHOES, A STRUT MEMBER PIVOTALLY CONNECTED TO SAID LEVER INTERMEDIATE ITS ENDS AND HAVING A HOOKSHAPED FREE END PORTION ENGAGING AN APERTURE IN THE OTHER BRAKE SHOE, A SPRING CLIP MEMBER IN SAID APERTURE ENGAGING SAID HOOK-SHAPED PORTION TO HOLD THE SAME AGAINST RATTLING, AND A FORCE APPLYING MEMBER CONNECTED TO THE OTHER END OF SAID LEVER TO ROCK THE SAME TO ACTUATE SAID BRAKE SHOES.
Claim 2
Dependent Claim
107 words
IN A BRAKE MECHANISM COMPRISING A PAIR OF BRAKE SHOES HAVING WEBS, AND A BRAKE DRUM, THAT IMPROVEMENT WHICH COMPRISES, A BRAKE ACTUATING LEVER, MEANS FOR LOOSELY FULCRUMING ONE END OF SAID LEVER ON THE WEB OF ONE OF SAID BRAKE SHOES, A STRUT MEMBER PIVOTALLY CONNECTED TO SAID LEVER INTERMEDIATE ITS ENDS AND HAVING A HOOKSHAPED FREE END PORTION ENGAGING AN APERTURE IN THE OTHER BRAKE SHOE, A SPRING CLIP MEMBER IN SAID APERTURE ENGAGING SAID HOOK-SHAPED PORTION TO HOLD THE SAME AGAINST RATTLING, AND A FORCE APPLYING MEMBER CONNECTED TO THE OTHER END OF SAID LEVER TO ROCK THE SAME TO ACTUATE SAID BRAKE SHOES.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |