US3087760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple brake system
Assignee: Bendix Westinghouse Automotive Air Brake Co
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Filing: 1960-07-14
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Granted: 1963-04-30
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Expires: 1980-07-14
Abstract
No abstract record available.
Inventors
- 👤 Harry M Valentine
- 👤 George E Ternent
- 👤 Frank R Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/261; B60T13/263; B60T15/00; B60T15/02; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A VEHICLE FLUID PRESSURE BRAKE SYSTEM HAVING A SOURCE OF FLUID PRESSURE, A FLUID PRESSURE ACTUATOR FOR NORMALLY APPLYING A VEHICLE BRAKE, A SPRING OPERATED FLUID PRESSURE RELEASED ACTUATOR FOR MECHANICALLY APPLYING THE BRAKE WHEN THE FLUID PRESSURE FROM SAID SOURCE IS BELOW A PREDETERMINED PRESSURE, A MANUALLY OPERABLE VALVE HAVING AN INLET PORT CONNECTED WITH SAID SOURCE, AN OUTLET PORT CONNECTED WITH SAID SPRING OPERATED ACTUATOR AND AN EXHAUST PORT, SAID VALVE ALSO HAVING A MANUALLY MOVABLE VALVE ELEMENT MOVABLE TO ONE POSITION TO CONNECT SAID INLET AND OUTLET PORTS AND MOVABLE TO A SECOND POSITION TO CONNECT SAID OUTLET AND EXHAUST PORTS, A MANUALLY OPERABLE BRAKE VALVE MOVABLE TO CONNECT SAID SOURCE AND FLUID PRESSURE ACTUATOR, AND MEANS TO CONNECT SAID SOURCE TO SAID EXHAUST PORT THROUGH SAID BRAKE VALVE TO CONNECT THE SOURCE WITH SAID SPRING OPERATED ACTUATOR WHEN THE BRAKE VALVE IS MOVED TO SUPPLY FLUID FROM THE SOURCE TO THE FLUID PRESSURE ACTUATOR AND SAID MANUALLY OPERABLE VALVE IS MOVED TO SAID SECOND POSITION.
Claim 2
Dependent Claim
169 words
A VEHICLE FLUID PRESSURE BRAKE SYSTEM HAVING A SOURCE OF FLUID PRESSURE, A FLUID PRESSURE ACTUATOR FOR NORMALLY APPLYING A VEHICLE BRAKE, A SPRING OPERATED FLUID PRESSURE RELEASED ACTUATOR FOR MECHANICALLY APPLYING THE BRAKE WHEN THE FLUID PRESSURE FROM SAID SOURCE IS BELOW A PREDETERMINED PRESSURE, A MANUALLY OPERABLE VALVE HAVING AN INLET PORT CONNECTED WITH SAID SOURCE, AN OUTLET PORT CONNECTED WITH SAID SPRING OPERATED ACTUATOR AND AN EXHAUST PORT, SAID VALVE ALSO HAVING A MANUALLY MOVABLE VALVE ELEMENT MOVABLE TO ONE POSITION TO CONNECT SAID INLET AND OUTLET PORTS AND MOVABLE TO A SECOND POSITION TO CONNECT SAID OUTLET AND EXHAUST PORTS, A MANUALLY OPERABLE BRAKE VALVE MOVABLE TO CONNECT SAID SOURCE AND FLUID PRESSURE ACTUATOR, AND MEANS TO CONNECT SAID SOURCE TO SAID EXHAUST PORT THROUGH SAID BRAKE VALVE TO CONNECT THE SOURCE WITH SAID SPRING OPERATED ACTUATOR WHEN THE BRAKE VALVE IS MOVED TO SUPPLY FLUID FROM THE SOURCE TO THE FLUID PRESSURE ACTUATOR AND SAID MANUALLY OPERABLE VALVE IS MOVED TO SAID SECOND 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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |