Patent US3200909A successfully refreshed from Google Patents.
US3200909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic brake adjusting mechanism
Assignee: ZF Active Safety US Inc
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Filing: 1963-07-09
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Granted: 1965-08-17
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Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:14
CPC Classifications
F; F16; F16D; F16D51/00; F16D51/46; F16D51/48; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/561; F16D65/565
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A BRAKE COMPRISING, A PAIR OF BRAKJE SHOES HAVING BRAKE LININGS, A ROTATABLE BRAKE DRUM, MEANS FOR MOVING SAID BRAKE SHOES INTO ENGAGEMENT WITH SAID BRAKE DRUM, AN ADJUSTABLE STRUT CONNECTING ADJACENT ENDS OF SAID BRAKE SHOES AND HAVING A ROTATING PART, HELICAL THREADS ON THE ROTATING PART OF SAID STRUT, SAID THREADS EACH HAVING AN INCLINED SIDE AND AN ABRUPT SIDE, A PAWL MEMBER PROVIDED WITH A CONCAVE END ADAPTED TO PARTIALLY SURROUND SAID STRUT AND PROVIDED WITH MATING THREADS ENGAGING THE THREADS ON SAID STRUT THROUGHOUT A PORTION OF THE CIRCUMFERENCE OF SAID STRUT, AND SPRING MEANS FOR
Claim 2
Dependent Claim
100 words
A BRAKE COMPRISING, A PAIR OF BRAKJE SHOES HAVING BRAKE LININGS, A ROTATABLE BRAKE DRUM, MEANS FOR MOVING SAID BRAKE SHOES INTO ENGAGEMENT WITH SAID BRAKE DRUM, AN ADJUSTABLE STRUT CONNECTING ADJACENT ENDS OF SAID BRAKE SHOES AND HAVING A ROTATING PART, HELICAL THREADS ON THE ROTATING PART OF SAID STRUT, SAID THREADS EACH HAVING AN INCLINED SIDE AND AN ABRUPT SIDE, A PAWL MEMBER PROVIDED WITH A CONCAVE END ADAPTED TO PARTIALLY SURROUND SAID STRUT AND PROVIDED WITH MATING THREADS ENGAGING THE THREADS ON SAID STRUT THROUGHOUT A PORTION OF THE CIRCUMFERENCE OF SAID STRUT, AND SPRING MEANS FOR
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |