US3076681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure brake apparatus with temporary and permanent suppression control
Assignee: Westinghouse Air Brake Co
•
Filing: 1960-12-23
•
Granted: 1963-02-05
•
Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Erik G Erson
- 👤 Robert J Worbois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
B; B61; B61H; B61H9/00; B61H9/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A LOCOMOTIVE BRAKE CONTROL APPARATUS COMPRISING, IN COMBINATION, A BRAKE PIPE NORMALLY CHARGED WITH FLUID UNDER PRESSURE, THE VARIATIONS OF PRESSURE IN WHICH EFFECT BRAKE APPLICATION AND BRAKE RELEASE, AN EQUALIZING RESERVOIR, A SUPPRESSION RESERVOIR, A MANUALLY OPERATIVE ENGINEER''S BRAKE VALVE DEVICE HAVING A SELF-LAPPING CONTROL VALVE MEANS FOR CONTROLLING THE PRESSURE IN SAID EQUALIZING RESERVOIR AND A SELF-LAPPING RELAY VALVE MEANS OPERATIVE BY VARIATIONS IN THE PRESSURE IN SAID EQUALIZING RESERVOIR TO CORRESPONDINGLY CONTROL THE PRESSURE IN SAID BRAKE PIPE, A FLUID PRESSURE OPERATED APPLICATION VALVE DEVICE OPERABLE RESPONSIVELY TO VARIATION OF A CONTROL FLUID PRESSURE FROM A NORMAL POSITION, IN WHICH IT ESTABLISHES A CHARGING COMMUNICATION VIA WHICH SAID EQUALIZING RESERVOIR IS CHARGED BY SAID SELF-LAPPING CONTROL VALVE MEANS TO EFFECT A RELEASE OF THE BRAKES, TO AN APPLICATION POSITION, IN WHICH IT CUTS OFF THE SUPPLY OF FLUID UNDER PRESSURE FROM SAID SELF-LAPPING CONTROL VALVE MEANS TO SAID EQUALIZING RESERVOIR AND ESTABLISHES A VENTING COMMUNICATION VIA WHICH THE PRESSURE IN SAID EQUALIZING RESERVOIR IS REDUCED TO EFFECT A BRAKE APPLICATION, MEANS OPERATIVE IN RESPONSE TO A CONTROL IMPULSE TO EFFECT A VARIATION OF THE CONTROL FLUID PRESSURE TO CAUSE OPERATION OF SAID APPLICATION VALVE DEVICE FROM ITS NORMAL POSITION TO ITS APPLICA-
Claim 2
Dependent Claim
205 words
A LOCOMOTIVE BRAKE CONTROL APPARATUS COMPRISING, IN COMBINATION, A BRAKE PIPE NORMALLY CHARGED WITH FLUID UNDER PRESSURE, THE VARIATIONS OF PRESSURE IN WHICH EFFECT BRAKE APPLICATION AND BRAKE RELEASE, AN EQUALIZING RESERVOIR, A SUPPRESSION RESERVOIR, A MANUALLY OPERATIVE ENGINEER''S BRAKE VALVE DEVICE HAVING A SELF-LAPPING CONTROL VALVE MEANS FOR CONTROLLING THE PRESSURE IN SAID EQUALIZING RESERVOIR AND A SELF-LAPPING RELAY VALVE MEANS OPERATIVE BY VARIATIONS IN THE PRESSURE IN SAID EQUALIZING RESERVOIR TO CORRESPONDINGLY CONTROL THE PRESSURE IN SAID BRAKE PIPE, A FLUID PRESSURE OPERATED APPLICATION VALVE DEVICE OPERABLE RESPONSIVELY TO VARIATION OF A CONTROL FLUID PRESSURE FROM A NORMAL POSITION, IN WHICH IT ESTABLISHES A CHARGING COMMUNICATION VIA WHICH SAID EQUALIZING RESERVOIR IS CHARGED BY SAID SELF-LAPPING CONTROL VALVE MEANS TO EFFECT A RELEASE OF THE BRAKES, TO AN APPLICATION POSITION, IN WHICH IT CUTS OFF THE SUPPLY OF FLUID UNDER PRESSURE FROM SAID SELF-LAPPING CONTROL VALVE MEANS TO SAID EQUALIZING RESERVOIR AND ESTABLISHES A VENTING COMMUNICATION VIA WHICH THE PRESSURE IN SAID EQUALIZING RESERVOIR IS REDUCED TO EFFECT A BRAKE APPLICATION, MEANS OPERATIVE IN RESPONSE TO A CONTROL IMPULSE TO EFFECT A VARIATION OF THE CONTROL FLUID PRESSURE TO CAUSE OPERATION OF SAID APPLICATION VALVE DEVICE FROM ITS NORMAL POSITION TO ITS APPLICA-
References Cited (Backward Citations)
US2982583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |