US3114438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic brake adjuster
Assignee: Motors Liquidation Co
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Filing: 1963-01-14
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Granted: 1963-12-17
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 James O Helvern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:39
CPC Classifications
F; F16; F16D; F16D51/00; F16D51/46; F16D51/48; F16D65/00; F16D65/02; F16D65/04; F16D65/08; F16D65/09; F16D65/091; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/561; F16D65/565
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
IN A BRAKE HAVING A PRIMARY SHOE AND A SECONDARY SHOE AND A STATIONARY MEMBER, AN AUTOMATIC ADJUSTER TO MAINTAIN A PREDETERMINED BRAKE SHOE CLEARANCE IN ACCORDANCE WITH WEAR OF THE SHOES, SAID ADJUSTER COMPRISING, AN EXTENDABLE STRUT BETWEEN THE SHOES INCLUDING A ROTATING WHEEL TO EXTEND THE STRUT UPON ROTATION OF THE WHEEL, A FIRST LEVER, MEANS ROTATABLY AND SLIDABLY MOUNTING SAID LEVER ON ONE OF SAID SHOES, SAID FIRST LEVER HAVING ONE END ENGAGEABLE WITH SAID WHEEL TO ROTATE THE WHEEL UPON ROTATION OF SAID LEVER, A SECOND LEVER, MEANS ROTATABLY MOUNTING SAID SECOND LEVER ON SAID ONE SHOE ADJACENT THE OTHER END OF SAID FIRST LEVER, SAID SECOND LEVER HAVING FORCE-TRANSMITTING MEANS ENGAGING SAID FIRST LEVER, SPRING MEANS CONNECTED FOR OPERATIVE REACTION ON SAID STATIONARY MEMBER AND SAID SECOND LEVER AND RESILIENTLY HOLDING SAID SECOND LEVER FORCE-TRANSMITTING MEANS AGAINST SAID FIRST LEVER, AND A LINK BETWEEN SAID STATIONARY MEMBER AND SAID FIRST LEVER TO EFFECT ROTATION OF SAID FIRST LEVER UPON MOVEMENT OF SAID ONE SHOE TO ROTATE SAID WHEEL AND EXTEND SAID STRUT.
Claim 2
Dependent Claim
177 words
IN A BRAKE HAVING A PRIMARY SHOE AND A SECONDARY SHOE AND A STATIONARY MEMBER, AN AUTOMATIC ADJUSTER TO MAINTAIN A PREDETERMINED BRAKE SHOE CLEARANCE IN ACCORDANCE WITH WEAR OF THE SHOES, SAID ADJUSTER COMPRISING, AN EXTENDABLE STRUT BETWEEN THE SHOES INCLUDING A ROTATING WHEEL TO EXTEND THE STRUT UPON ROTATION OF THE WHEEL, A FIRST LEVER, MEANS ROTATABLY AND SLIDABLY MOUNTING SAID LEVER ON ONE OF SAID SHOES, SAID FIRST LEVER HAVING ONE END ENGAGEABLE WITH SAID WHEEL TO ROTATE THE WHEEL UPON ROTATION OF SAID LEVER, A SECOND LEVER, MEANS ROTATABLY MOUNTING SAID SECOND LEVER ON SAID ONE SHOE ADJACENT THE OTHER END OF SAID FIRST LEVER, SAID SECOND LEVER HAVING FORCE-TRANSMITTING MEANS ENGAGING SAID FIRST LEVER, SPRING MEANS CONNECTED FOR OPERATIVE REACTION ON SAID STATIONARY MEMBER AND SAID SECOND LEVER AND RESILIENTLY HOLDING SAID SECOND LEVER FORCE-TRANSMITTING MEANS AGAINST SAID FIRST LEVER, AND A LINK BETWEEN SAID STATIONARY MEMBER AND SAID FIRST LEVER TO EFFECT ROTATION OF SAID FIRST LEVER UPON MOVEMENT OF SAID ONE SHOE TO ROTATE SAID WHEEL AND EXTEND SAID STRUT.
References Cited (Backward Citations)
GB612360A
Cited
US3050157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |