Patent US3363519A successfully refreshed from Google Patents.
US3363519A
Expired / Lapsed
US
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Combined service and emergency brake system apparatus
Assignee: JAMES H CLACK
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Filing: 1966-04-25
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Granted: 1968-01-16
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 James H Clack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:25
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/22; B60T13/24; B60T13/26; B60T13/261; B60T17/00; B60T17/08; B60T17/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
BRAKE ACTUATING APPARATUS COMPRISING A CONNECTING MEMBER ADAPTED TO BE MOVED TO OPERATE A BRAKE SHOE BETWEEN BRAKE APPLYING AND BRAKE RELEASING POSITIONS, A CYLINDER, A PISTON MOVABLE WITHIN THE CYLINDER TO MOVE THE MEMBER, SPRING BIASING MEANS PROVIDING A SOURCE OF STORED ENERGY TO DRIVE SAID MEMBER TO BRAKE APPLYING POSITION, SAID BIASING MEANS INCLUDING AT LEAST TWO BANKS OF HELICAL SPRINGS WITHIN SAID CYLINDER AND DISPOSED TO MOVE SAID PISTON IN BRAKE APPLYING DIRECTION, A PLATE SEPARATING SAID BANKS AND MUTUALLY SUPPORTED BY BOTH, EACH
Claim 2
Dependent Claim
87 words
BRAKE ACTUATING APPARATUS COMPRISING A CONNECTING MEMBER ADAPTED TO BE MOVED TO OPERATE A BRAKE SHOE BETWEEN BRAKE APPLYING AND BRAKE RELEASING POSITIONS, A CYLINDER, A PISTON MOVABLE WITHIN THE CYLINDER TO MOVE THE MEMBER, SPRING BIASING MEANS PROVIDING A SOURCE OF STORED ENERGY TO DRIVE SAID MEMBER TO BRAKE APPLYING POSITION, SAID BIASING MEANS INCLUDING AT LEAST TWO BANKS OF HELICAL SPRINGS WITHIN SAID CYLINDER AND DISPOSED TO MOVE SAID PISTON IN BRAKE APPLYING DIRECTION, A PLATE SEPARATING SAID BANKS AND MUTUALLY SUPPORTED BY BOTH, EACH
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |