Patent US3253682A successfully refreshed from Google Patents.
US3253682A
Expired / Lapsed
US
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Brake head positioning device
Assignee: Westinghouse Air Brake Co
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Filing: 1964-04-22
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Granted: 1966-05-31
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Andrew G Haydn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:15
CPC Classifications
B; B61; B61H; B61H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A VEHICLE BRAKE APPARATUS OF THE TYPE HAVING A BRAKE HEAD AND SHOE ASSEMBLY PIVOTALLY CARRIED BY A BRAKER HANGER LEVER FOR MOVEMENT INTO BRAKING ENGAGEMENT, WITH A VEHICLE WHEEL TREAD, A BRAKE HEAD POSITIONING DEVICE COMPRISING: (A) A FRAME MEMBER HAVING TO END WALLS IN FIXED SPACED RELATION AND PROVIDED WITH REGISTERING OPENINGS THERETHROUGH, (B) A STEM EXTENDING THROUGH SAID OPENINGS IN SAID END WALLS FOR SLIDABLE MOVEMENT THERETHROUGH IN EITHER DIRECTION WITH RESPECT TO SAID FRAME MEMBER, (C) SAID FRAME MEMBER AND SAID STEM HAVING AN OPERATIVE CONNECTION BETWEEN THE BRAKE HANGER LEVER AND THE BRAKE HEAD IN A MANNER SUCH THAT AXIAL MOVEMENT OF THE XXXX XXXX DIRECTION OR THE OPPOSITE DIRECTION RELATIVE TO THE FRAME MEMBER OCCURS RESPONSIVELY TO RELATIVE PIVOTAL MOVEMENT OF THE HANGER LEVER AND THE BRAKE HEAD INCIDENT TO A BRAKE APPLICATION, AND (D) LOCKING MEANS FOR LOCKING SAID STEM TO SAID FRAME MEMBER, SAID LOCKING MEANS BEING OPERATIVE RE-
Claim 2
Dependent Claim
158 words
IN A VEHICLE BRAKE APPARATUS OF THE TYPE HAVING A BRAKE HEAD AND SHOE ASSEMBLY PIVOTALLY CARRIED BY A BRAKER HANGER LEVER FOR MOVEMENT INTO BRAKING ENGAGEMENT, WITH A VEHICLE WHEEL TREAD, A BRAKE HEAD POSITIONING DEVICE COMPRISING: (A) A FRAME MEMBER HAVING TO END WALLS IN FIXED SPACED RELATION AND PROVIDED WITH REGISTERING OPENINGS THERETHROUGH, (B) A STEM EXTENDING THROUGH SAID OPENINGS IN SAID END WALLS FOR SLIDABLE MOVEMENT THERETHROUGH IN EITHER DIRECTION WITH RESPECT TO SAID FRAME MEMBER, (C) SAID FRAME MEMBER AND SAID STEM HAVING AN OPERATIVE CONNECTION BETWEEN THE BRAKE HANGER LEVER AND THE BRAKE HEAD IN A MANNER SUCH THAT AXIAL MOVEMENT OF THE XXXX XXXX DIRECTION OR THE OPPOSITE DIRECTION RELATIVE TO THE FRAME MEMBER OCCURS RESPONSIVELY TO RELATIVE PIVOTAL MOVEMENT OF THE HANGER LEVER AND THE BRAKE HEAD INCIDENT TO A BRAKE APPLICATION, AND (D) LOCKING MEANS FOR LOCKING SAID STEM TO SAID FRAME MEMBER, SAID LOCKING MEANS BEING OPERATIVE RE-
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |