US3217843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-applied electric power released tread brake unit
Assignee: Westinghouse Air Brake Co
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Filing: 1964-01-02
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Granted: 1965-11-16
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 George K Newell
- 👤 Allen W Kyllonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:40
CPC Classifications
B; B61; B61H; B61H1/00; B61H1/003; B61H13/00; B61H13/005; F; F16; F16D; F16D49/00; F16D59/00; F16D59/02; F16D2121/00; F16D2121/18; F16D2121/24; F16D2121/26; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/34; F16D2125/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A PACKAGE BRAKE ASSEMBLY FOR A VEHICLE WHEEL COMPRISING, IN COMBINATION: (A) A BRAKE SHOE MEANS FOR APPLYING A BRAKING FORCE TO A VEHICLE WHEEL, (B) A PIVOTED LEVER EFFECTIVE UPON ROCKING IN ONE DIRECTION TO APPLY SAID BRAKE SHOE MEANS AGAINST THE VEHICLE WHEEL, AND UPON ROCKING IN THE OPPOSITE DIRECTION TO MOVE SAID BRAKE SHOE MEANS AWAY FROM THE VEHICLE WHEEL, AND (C) MEANS FOR ACTUATING SAID PIVOTED LEVER INCLUDING: (I) A SCREW-THREADED MEMBER ROTATABLY MOUNTED FOR ROTATION IN OPOSITE DIRECTIONS ON ITS LONGITUDINAL AXIS, (II) SPIRAL SPRING MEANS CONNECTED TO SAID SCREWTHREADED MEMBER SO AS TO BE ROTARILY WOUND UP UPON ROTATION OF SAID SCREW-THREADED MEMBER IN ONE DIRECTION AND POTENTIALLY EFFECTIVE WHEN WOUND UP TO EXERT A FORCE TO ROTATE SAID SCREWTHREADED MEMBER IN THE OPPOSITE DIRECTION, (III) A TRAVELING NUT TRAVELED ON SAID SCREWTHREADED MEMBER IN OPPOSITE DIRECTIONS ACCORDING TO THE DIRECTION OF ROTATION OF THE SCREWTHREADED MEMBER, (IV) RESILIENT MEANS PROVIDING A YIELDABLE CONNECTION BETWEEN SAID PIVOTED LEVER AND SAID TRAVELING NUT WHEREBY MOVEMENT OF SAID TRAVELING NUT
Claim 2
Dependent Claim
174 words
A PACKAGE BRAKE ASSEMBLY FOR A VEHICLE WHEEL COMPRISING, IN COMBINATION: (A) A BRAKE SHOE MEANS FOR APPLYING A BRAKING FORCE TO A VEHICLE WHEEL, (B) A PIVOTED LEVER EFFECTIVE UPON ROCKING IN ONE DIRECTION TO APPLY SAID BRAKE SHOE MEANS AGAINST THE VEHICLE WHEEL, AND UPON ROCKING IN THE OPPOSITE DIRECTION TO MOVE SAID BRAKE SHOE MEANS AWAY FROM THE VEHICLE WHEEL, AND (C) MEANS FOR ACTUATING SAID PIVOTED LEVER INCLUDING: (I) A SCREW-THREADED MEMBER ROTATABLY MOUNTED FOR ROTATION IN OPOSITE DIRECTIONS ON ITS LONGITUDINAL AXIS, (II) SPIRAL SPRING MEANS CONNECTED TO SAID SCREWTHREADED MEMBER SO AS TO BE ROTARILY WOUND UP UPON ROTATION OF SAID SCREW-THREADED MEMBER IN ONE DIRECTION AND POTENTIALLY EFFECTIVE WHEN WOUND UP TO EXERT A FORCE TO ROTATE SAID SCREWTHREADED MEMBER IN THE OPPOSITE DIRECTION, (III) A TRAVELING NUT TRAVELED ON SAID SCREWTHREADED MEMBER IN OPPOSITE DIRECTIONS ACCORDING TO THE DIRECTION OF ROTATION OF THE SCREWTHREADED MEMBER, (IV) RESILIENT MEANS PROVIDING A YIELDABLE CONNECTION BETWEEN SAID PIVOTED LEVER AND SAID TRAVELING NUT WHEREBY MOVEMENT OF SAID TRAVELING NUT
References Cited (Backward Citations)
US1272038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |