US3223458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake mechanism
Assignee: Bendix Westinghouse Automotive Air Brake Co
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Filing: 1962-12-31
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Granted: 1965-12-14
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Harry M Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:04
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/268; B60T15/00; B60T15/02; B60T15/04; B60T15/041; B60T17/00; B60T17/08; B60T17/081; B60T17/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87056; Y10T137/87064
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A FLUID PRESSURE SAFETY BRAKE SYSTEM HAVING A SOURCE OF FLUID PRESSURE, A FLUID PRESSURE ACTUATOR FOR APPLYING A VEHICLE BRAKE, SPRING-APPLIED BRAKE LOCKING MEANS FOR LOCKING SAID ACTUATOR IN A BRAKE APPLIED POSITION, FLUID PRESSURE OPERATED RELEASE MEANS FOR RELEASING SAID BRAKE LOCKING MEANS, AND VALVE MEANS FOR CONTROLLING THE APPLICATION OF FLUID PRESSURE TO AND FROM SAID ACTUATOR AND TO AND FROM SAID RELEASE MEANS, SAID VALVE MEANS INCLUDING A MANUALLY OPERABLE MEMBER MOVABLE TO A FIRST POSITION TO CONNECT SAID SOURCE WITH SAID RELEASE MEANS AND TO CONNECT SAID ACTUATOR WITH THE ATMOSPHERE, AND MOVABLE TO A SECOND POSITION TO CONNECT SAID RELEASE MEANS WITH THE ATMOSPHERE AND CONNECT SAID ACTUATOR WITH THE SOURCE, SAID MANUALLY OPERABLE MEMBER BEING MOVABLE FROM SAID SECOND POSITION TO A THIRD POSITION TO CONNECT BOTH SAID RELEASE MEANS AND SAID ACTUATOR WITH THE ATMOSPHERE, MEANS NORMALLY OPERATIVE FOR PREVENTING MOVEMENT OF SAID MANUALLY OPERABLE MEMBER FROM SAID SECOND POSITION TO SAID THIRD POSITION, AND MEANS RESPONSIVE TO A PREDETERMINED PRESSURE ADMITTED TO SAID ACTUATOR FOR MOVING SAID PREVENTING MEANS TO AN INOPERATIVE POSITION.
Claim 2
Dependent Claim
182 words
A FLUID PRESSURE SAFETY BRAKE SYSTEM HAVING A SOURCE OF FLUID PRESSURE, A FLUID PRESSURE ACTUATOR FOR APPLYING A VEHICLE BRAKE, SPRING-APPLIED BRAKE LOCKING MEANS FOR LOCKING SAID ACTUATOR IN A BRAKE APPLIED POSITION, FLUID PRESSURE OPERATED RELEASE MEANS FOR RELEASING SAID BRAKE LOCKING MEANS, AND VALVE MEANS FOR CONTROLLING THE APPLICATION OF FLUID PRESSURE TO AND FROM SAID ACTUATOR AND TO AND FROM SAID RELEASE MEANS, SAID VALVE MEANS INCLUDING A MANUALLY OPERABLE MEMBER MOVABLE TO A FIRST POSITION TO CONNECT SAID SOURCE WITH SAID RELEASE MEANS AND TO CONNECT SAID ACTUATOR WITH THE ATMOSPHERE, AND MOVABLE TO A SECOND POSITION TO CONNECT SAID RELEASE MEANS WITH THE ATMOSPHERE AND CONNECT SAID ACTUATOR WITH THE SOURCE, SAID MANUALLY OPERABLE MEMBER BEING MOVABLE FROM SAID SECOND POSITION TO A THIRD POSITION TO CONNECT BOTH SAID RELEASE MEANS AND SAID ACTUATOR WITH THE ATMOSPHERE, MEANS NORMALLY OPERATIVE FOR PREVENTING MOVEMENT OF SAID MANUALLY OPERABLE MEMBER FROM SAID SECOND POSITION TO SAID THIRD POSITION, AND MEANS RESPONSIVE TO A PREDETERMINED PRESSURE ADMITTED TO SAID ACTUATOR FOR MOVING SAID PREVENTING MEANS TO AN INOPERATIVE POSITION.
Claim 3
Dependent Claim
152 words
A FLUID PRESSURE SAFETY BRAKE SYSTEM HAVING A SOURCE OF FLUID PRESSURE, A FLUID PRESSURE ACTUATOR FOR APPLYING A VEHICLE BRAKE, SPRING-APPLIED BRAKE LOCKING MEANS FOR LOCKING SAID ACTUATOR IN A BRAKE APPLIED POSITION, FLUID PRESSURE OPERATED RELEASE MEANS FOR RELEASING SAID BRAKE LOCKING MEANS, AND VALVE MEANS FOR CONTROLLING THE APPLICATION OF FLUID PRESSURE TO AND FROM SAID ACTUATOR AND TO AND FROM SAID RELEASE MEANS, SAID VALVE MEANS INCLUDING A FIRST VALVE FOR CONTROLLING THE APPLICATION OF FLUID PRESSURE TO AND FROM SAID RELEASE MEANS, A SECOND VALVE FOR CONTROLLING THE FLOW OF FLUID PRESSURE TO AND FROM SAID ACTUATOR, AND A SINGLE MANUALLY OPERABLE MEMBER FOR CONTROLLING THE OPERATION OF SAID FIRST AND SECOND VALVES, SAID VALVE MEANS ALSO INCLUDING A PRESSURE OPERATED MEMBER RESPONSIVE TO A DECREASE IN FLUID PRESSURE FROM SAID SOURCE TO A PREDETERMINED VALUE FOR SUPPLYING FLUID PRESSURE TO SAID ACTUATOR TO APPLY THE BRAKE.
Claim 4
Dependent Claim
152 words
A FLUID PRESSURE SAFETY BRAKE SYSTEM HAVING A SOURCE OF FLUID PRESSURE, A FLUID PRESSURE ACTUATOR FOR APPLYING A VEHICLE BRAKE, SPRING-APPLIED BRAKE LOCKING MEANS FOR LOCKING SAID ACTUATOR IN A BRAKE APPLIED POSITION, FLUID PRESSURE OPERATED RELEASE MEANS FOR RELEASING SAID BRAKE LOCKING MEANS, AND VALVE MEANS FOR CONTROLLING THE APPLICATION OF FLUID PRESSURE TO AND FROM SAID ACTUATOR AND TO AND FROM SAID RELEASE MEANS, SAID VALVE MEANS INCLUDING A FIRST VALVE FOR CONTROLLING THE APPLICATION OF FLUID PRESSURE TO AND FROM SAID RELEASE MEANS, A SECOND VALVE FOR CONTROLLING THE FLOW OF FLUID PRESSURE TO AND FROM SAID ACTUATOR, AND A SINGLE MANUALLY OPERABLE MEMBER FOR CONTROLLING THE OPERATION OF SAID FIRST AND SECOND VALVES, SAID VALVE MEANS ALSO INCLUDING A PRESSURE OPERATED MEMBER RESPONSIVE TO A DECREASE IN FLUID PRESSURE FROM SAID SOURCE TO A PREDETERMINED VALUE FOR SUPPLYING FLUID PRESSURE TO SAID ACTUATOR TO APPLY THE BRAKE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |