US3269490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined hydraulic and mechanical brake
Assignee: ZF Active Safety US Inc
•
Filing: 1964-07-09
•
Granted: 1966-08-30
•
Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:55
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D65/00; F16D65/14; F16D65/16; F16D65/18; F16D2121/00; F16D2121/02; F16D2121/14; F16D2123/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A DISK BRAKE FOR WHEELS COMPRISING, A BRAKE DISK ROTATABLE WITH THE WHEEL, A STATIONARY TORQUE MEMBER, A PAIR OF BRAKE SHOES SUPPORTED BY SAID TORQUE MEMBER FOR MOVEMENT TOWARD AND FROM SAID BRAKE DISK, A PISTON FOR ACTUATING ONE OF SAID BRAKE SHOES, EXTENSIBLE MEANS INCLUDING A ROTATABLE PART WITHIN AND ENGAGING SAID PISTON, RATCHET MEANS ASSOCIATED WITH SAID EXTENSIBLE MEANS AND POSITIONED OUTSIDE SAID PISTON, PIVOTAL LEVER MEANS HAVING A PAWL MOUNTED THEREON AND ENGAGEABLE WITH SAID RATCHET MEANS, WHEREBY SUBSTANTIAL PIVOTAL MOVEMENT OF SAID LEVER EXTENDS SAID EXTENSIBLE MEANS.
Claim 2
Dependent Claim
92 words
A DISK BRAKE FOR WHEELS COMPRISING, A BRAKE DISK ROTATABLE WITH THE WHEEL, A STATIONARY TORQUE MEMBER, A PAIR OF BRAKE SHOES SUPPORTED BY SAID TORQUE MEMBER FOR MOVEMENT TOWARD AND FROM SAID BRAKE DISK, A PISTON FOR ACTUATING ONE OF SAID BRAKE SHOES, EXTENSIBLE MEANS INCLUDING A ROTATABLE PART WITHIN AND ENGAGING SAID PISTON, RATCHET MEANS ASSOCIATED WITH SAID EXTENSIBLE MEANS AND POSITIONED OUTSIDE SAID PISTON, PIVOTAL LEVER MEANS HAVING A PAWL MOUNTED THEREON AND ENGAGEABLE WITH SAID RATCHET MEANS, WHEREBY SUBSTANTIAL PIVOTAL MOVEMENT OF SAID LEVER EXTENDS SAID EXTENSIBLE MEANS.
References Cited (Backward Citations)
US1852174A
Cited
US2389618A
Cited
US2822892A
Cited
US2820530A
Cited
US3059731A
Cited
FR1348468A
Cited
GB984436A
Cited
US3158234A
Cited
US3169608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |