Patent US3294455A successfully refreshed from Google Patents.
US3294455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle fluid pressure brake system and control valve
Assignee: Bendix Westinghouse Automotive Air Brake Co
•
Filing: 1964-04-03
•
Granted: 1966-12-27
•
Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 Harry M Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
IN A FLUID PRESSURE BRAKING SYSTEM INCLUDING A SOURCE OF FLUID PRESSURE, A BRAKE ACTUATOR, A PAIR OF SERIALLY ARRANGED FLUID PRESSURE RESPONSIVE ELEMENTS OPERATIVELY CONNECTED TO SAID ACTUATOR FOR MOVING THE SAME IN A BRAKE APPLYING DIRECTION, A MANUALLY OPERATED BRAKE VALVE HAVING AN INLET CONNECTED TO THE SOURCE OF FLUID PRESSSURE AND AND OUTLET CONNECTED TO ONE OF SAID FLUID PRESSURE RESPONSIVE ELEMENTS, FLUID CONDUIT MEANS CONNECTING SAID SOURCE OF FLUID PRESSURE TO THE OTHER OF SAID FLUID PRESSURE RESPONSIVE ELEMENTS, NORMALLY CLOSED VALVE MEANS BETWEEN THE OUTLET OF SAID BRAKE VALVE AND SAID ONE FLUID PRESSURE RESPONSIVE ELEMENT, NORMALLY OPEN VALVE MANES IN THE CONDUIT MEANS BETWEEN SAID SOURCE AND SAID OTHER FLUID PRESSURE RESPONSIVE ELEMENT, FLUID PRESSURE RESPONSIVE CONTROL MEANS CONNECTED TO SAID FIRST NAMED AND SAID SECOND NAMED VALVE MEANS AND RESPONSIVE TO THE PRESENCE OF CONTROL PRESSURE TO MOVE SAID FIRST NAMED VALVE TO ITS OPEN POSITION AND SAID SECOND NAMED VALVE TO ITS CLOSED POSITION WHEREBY ONLY ONE OF SAID PRESSURE RESPONSIVE ELEMENTS AT A TIME CAN BE COMMUNICATED WITH SAID SOURCE OF PRESSURE AND OTHER VALVE MEANS MOVABLE TO CONNECT SAID OTHER FLUID PRESSURE RESPONSIVE ELEMENT WITH ATMOSPHERE DEPENDENT UPON MOVEMENT OF SAID SECOND NAMED VALVE TO ITS CLOSED POSITION.
Claim 2
Dependent Claim
208 words
IN A FLUID PRESSURE BRAKING SYSTEM INCLUDING A SOURCE OF FLUID PRESSURE, A BRAKE ACTUATOR, A PAIR OF SERIALLY ARRANGED FLUID PRESSURE RESPONSIVE ELEMENTS OPERATIVELY CONNECTED TO SAID ACTUATOR FOR MOVING THE SAME IN A BRAKE APPLYING DIRECTION, A MANUALLY OPERATED BRAKE VALVE HAVING AN INLET CONNECTED TO THE SOURCE OF FLUID PRESSSURE AND AND OUTLET CONNECTED TO ONE OF SAID FLUID PRESSURE RESPONSIVE ELEMENTS, FLUID CONDUIT MEANS CONNECTING SAID SOURCE OF FLUID PRESSURE TO THE OTHER OF SAID FLUID PRESSURE RESPONSIVE ELEMENTS, NORMALLY CLOSED VALVE MEANS BETWEEN THE OUTLET OF SAID BRAKE VALVE AND SAID ONE FLUID PRESSURE RESPONSIVE ELEMENT, NORMALLY OPEN VALVE MANES IN THE CONDUIT MEANS BETWEEN SAID SOURCE AND SAID OTHER FLUID PRESSURE RESPONSIVE ELEMENT, FLUID PRESSURE RESPONSIVE CONTROL MEANS CONNECTED TO SAID FIRST NAMED AND SAID SECOND NAMED VALVE MEANS AND RESPONSIVE TO THE PRESENCE OF CONTROL PRESSURE TO MOVE SAID FIRST NAMED VALVE TO ITS OPEN POSITION AND SAID SECOND NAMED VALVE TO ITS CLOSED POSITION WHEREBY ONLY ONE OF SAID PRESSURE RESPONSIVE ELEMENTS AT A TIME CAN BE COMMUNICATED WITH SAID SOURCE OF PRESSURE AND OTHER VALVE MEANS MOVABLE TO CONNECT SAID OTHER FLUID PRESSURE RESPONSIVE ELEMENT WITH ATMOSPHERE DEPENDENT UPON MOVEMENT OF SAID SECOND NAMED VALVE TO ITS CLOSED POSITION.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |