US3104133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined control and tractor protection valve
Assignee: Bendix Westinghouse Automotive Air Brake Co
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Filing: 1961-06-28
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Granted: 1963-09-17
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Harry M Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/40; B60T13/403; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2703; Y10T137/8593; Y10T137/86485; Y10T137/87917; Y10T137/88046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
FLUID PRESSURE CONTROL VALVE MEANS COMPRISING A CASING HAVING AN INLET PORT CONNECTED AT ALL TIMES TO A SOURCE OF FLUID PRESSURE AND AN OUTLET PORT CONNECTED AT ALL TIMES TO A PRESSURE ACTUATED DEVICE, FIRST AND SECOND VALVE CHAMBERS IN SAID CASING RESPECTIVELY CONNECTED TO SAID INLET AND OUTLET PORTS, A PAIR OF INDEPENDENTLY MOVABLE VALVE ELEMENTS EACH RESPECTIVELY OCCUPYING ONE OF SAID CHAMBERS, A PAIR OF EXHAUST PORTS EACH CONNECTED RESPECTIVELY TO ONE OF SAID CHAMBERS, PASSAGE MEANS INTERCONNECTING SAID CHAMBERS, MANUAL MEANS FOR MOVING SAID FIRST VALVE ELEMENT BETWEEN A FIRST POSITION WHEREIN SAID INLET PORT IS DISCONNECTED FROM SAID PASSAGE MEANS AND THE LATTER IS CONNECTED TO SAID FIRST EXHAUST PORT AND A SECOND POSITION WHEREIN SAID INLET PORT IS CONNECTED TO SAID PASSAGE MEANS AND THE LATTER IS DISCONNECTED FROM SAID EXHAUST PORT, AND MEANS RESPONSIVE TO THE PRESSURE IN SAID PASSAGE MEANS FOR EFFECTING MOVEMENT OF SAID SECOND VALVE ELEMENT BETWEEN A FIRST POSITION WHEREIN SAID PASSAGE MEANS IS DISCONNECTED FROM SAID OUTLET PORT AND THE LATTER IS CONNECTED TO SAID SECOND EXHAUST PORT AND A SECOND POSITION WHEREIN SAID PASSAGE MEANS IS CONNECTED TO SAID OUTLET PORT AND THE LATTER IS DISCONNECTED FROM SAID SECOND EXHAUST PORT.
Claim 2
Dependent Claim
204 words
FLUID PRESSURE CONTROL VALVE MEANS COMPRISING A CASING HAVING AN INLET PORT CONNECTED AT ALL TIMES TO A SOURCE OF FLUID PRESSURE AND AN OUTLET PORT CONNECTED AT ALL TIMES TO A PRESSURE ACTUATED DEVICE, FIRST AND SECOND VALVE CHAMBERS IN SAID CASING RESPECTIVELY CONNECTED TO SAID INLET AND OUTLET PORTS, A PAIR OF INDEPENDENTLY MOVABLE VALVE ELEMENTS EACH RESPECTIVELY OCCUPYING ONE OF SAID CHAMBERS, A PAIR OF EXHAUST PORTS EACH CONNECTED RESPECTIVELY TO ONE OF SAID CHAMBERS, PASSAGE MEANS INTERCONNECTING SAID CHAMBERS, MANUAL MEANS FOR MOVING SAID FIRST VALVE ELEMENT BETWEEN A FIRST POSITION WHEREIN SAID INLET PORT IS DISCONNECTED FROM SAID PASSAGE MEANS AND THE LATTER IS CONNECTED TO SAID FIRST EXHAUST PORT AND A SECOND POSITION WHEREIN SAID INLET PORT IS CONNECTED TO SAID PASSAGE MEANS AND THE LATTER IS DISCONNECTED FROM SAID EXHAUST PORT, AND MEANS RESPONSIVE TO THE PRESSURE IN SAID PASSAGE MEANS FOR EFFECTING MOVEMENT OF SAID SECOND VALVE ELEMENT BETWEEN A FIRST POSITION WHEREIN SAID PASSAGE MEANS IS DISCONNECTED FROM SAID OUTLET PORT AND THE LATTER IS CONNECTED TO SAID SECOND EXHAUST PORT AND A SECOND POSITION WHEREIN SAID PASSAGE MEANS IS CONNECTED TO SAID OUTLET PORT AND THE LATTER IS DISCONNECTED FROM SAID SECOND EXHAUST PORT.
References Cited (Backward Citations)
US2645308A
Cited
US2923576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |