US3237995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service and emergency brake system
Assignee: Berg Manufacturing and Sales Co
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Filing: 1964-02-26
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Granted: 1966-03-01
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Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Harold L Dobrikin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/40; B60T13/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
A PRESSURE BRAKE SYSTEM INCLUDING A FIRST PRESSURE SOURCE, A PLURALITY OF BRAKE ACTUATORS, EACH OF SAID ACTUATORS HAVING A SERVICE INLET FOR NORMAL PRESSURE BRAKE OPERATION, A SPRING-OPERATED ELEMENT FOR EMERGENCY BRAKE OPERATION AND A RELEASE INLET FOR PRESSURE RELEASE OF SAID SPRING-OPERATED ELEMENT, A FIRST CONDUIT COMMUNICATING SAID FIRST PRESSURE SOURCE WITH SAID SERVICE INLETS, AN APPLICATION VALVE IN SAID FIRST CONDUIT CONTROLLING SAID COMMUNICATION, A SECOND CONDUIT COMMUNICATING SAID FIRST SOURCE WITH SAID RELEASE INLETS, FIRST AND SECOND MANUALLY OPERATED VALVES ARRANGED IN SERIES IN SAID SECOND CONDUIT, SAID SECOND MANUALLY OPERABLE VALVE HAVING A FIRST POSITION COMMUNICATING SAID FIRST MANUALLY OPERABLY VALVE WITH SAID RELEASE INLETS WHEREBY SAID FIRST MANUALLY OPERABLE VALVE CONTROLS COMMUNICATION BETWEEN SAID FIRST SOURCE AND SAID RELEASE INLETS, AN AUXILIARY PRESSURE SOURCE, A THIRD CONDUIT COMMUNICATING SAID AUXILIARY PRESSURE SOURCE WITH SAID SECOND MANUALLY OPERABLE VALVE, SAID SECOND MANUALLY OPERABLE VALVE HAVING A SECOND POSITION COMMUNICATING SAID AUXILIARY SOURCE WITH SAID RELEASE INLETS, A FOURTH CONDUIT COMMUNICATING SAID FIRST CONDUIT, DOWNSTREAM OF SAID APPLICATION VALVE, WITH SAID FIRST MANUALLY OPERABLE VALVE, SAID FIRST MANUALLY OPERABLE VALVE HAVING AN ELEMENT MOVABLE INTO POSITION COMMUNICATING SAID FIRST SOURCE WITH SAID RELEASE INLETS IN RESPONSE TO FLUID PRESSURE ENTERING SAID FIRST MANUALLY OPERABLE VALVE FROM SAID FOURTH CONDUIT.
Claim 2
Dependent Claim
213 words
A PRESSURE BRAKE SYSTEM INCLUDING A FIRST PRESSURE SOURCE, A PLURALITY OF BRAKE ACTUATORS, EACH OF SAID ACTUATORS HAVING A SERVICE INLET FOR NORMAL PRESSURE BRAKE OPERATION, A SPRING-OPERATED ELEMENT FOR EMERGENCY BRAKE OPERATION AND A RELEASE INLET FOR PRESSURE RELEASE OF SAID SPRING-OPERATED ELEMENT, A FIRST CONDUIT COMMUNICATING SAID FIRST PRESSURE SOURCE WITH SAID SERVICE INLETS, AN APPLICATION VALVE IN SAID FIRST CONDUIT CONTROLLING SAID COMMUNICATION, A SECOND CONDUIT COMMUNICATING SAID FIRST SOURCE WITH SAID RELEASE INLETS, FIRST AND SECOND MANUALLY OPERATED VALVES ARRANGED IN SERIES IN SAID SECOND CONDUIT, SAID SECOND MANUALLY OPERABLE VALVE HAVING A FIRST POSITION COMMUNICATING SAID FIRST MANUALLY OPERABLY VALVE WITH SAID RELEASE INLETS WHEREBY SAID FIRST MANUALLY OPERABLE VALVE CONTROLS COMMUNICATION BETWEEN SAID FIRST SOURCE AND SAID RELEASE INLETS, AN AUXILIARY PRESSURE SOURCE, A THIRD CONDUIT COMMUNICATING SAID AUXILIARY PRESSURE SOURCE WITH SAID SECOND MANUALLY OPERABLE VALVE, SAID SECOND MANUALLY OPERABLE VALVE HAVING A SECOND POSITION COMMUNICATING SAID AUXILIARY SOURCE WITH SAID RELEASE INLETS, A FOURTH CONDUIT COMMUNICATING SAID FIRST CONDUIT, DOWNSTREAM OF SAID APPLICATION VALVE, WITH SAID FIRST MANUALLY OPERABLE VALVE, SAID FIRST MANUALLY OPERABLE VALVE HAVING AN ELEMENT MOVABLE INTO POSITION COMMUNICATING SAID FIRST SOURCE WITH SAID RELEASE INLETS IN RESPONSE TO FLUID PRESSURE ENTERING SAID FIRST MANUALLY OPERABLE VALVE FROM SAID FOURTH CONDUIT.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |