US3244190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic relay valve
Assignee: Powers Regulator Co
•
Filing: 1963-10-14
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Granted: 1966-04-05
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Welsey L Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:27
CPC Classifications
F; F15; F15C; F15C4/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A PNEUMATIC RELAY VALVE TO BE USED IN THE CONTROL OF A VARIABLE, THE COMBINATION COMPRISING: CASING MEANS PROVIDING A FIRST CHAMBER ADAPTED TO BE CONNECTED TO A SOURCE OF PNEUMATIC SUPPLY PRESSURE, A SECOND CHAMBER ADAPTED TO RECEIVE CONTROL PRESSURE FOR OPERATING A CONTROL INSTRUMENTALITY, AND A THIRD CHAMBER HAVING A PORT FOR EXHAUST TO ATMOSPHERE; AN EXHAUST VALVE MEMBER COOPERATIVE WITH SAID THIRD CHAMBER EXHAUST PORT FOR CONTROLLING EXHAUST OF SAID THIRD CHAMBER TO ATMOSPHERE; MEANS FOR SENSING THE MAGNITUDE OF THE CONTROLLED VARIABLE AND FOR EXERTING A FIRST FORCE ON SAID EXHAUST VALVE MEMBER TOWARD A CLOSED POSITION, THE MAGNITUDE OF SAID FIRST FORCE BEING DEPENDENT UPON THE MAGNITUDE OF THE CONTROLLED VARIABLE, SAID EXHAUST VALVE MEMBER BEING FURTHER ACTED UPON BY A SECOND FORCE TENDING TO UNSEAT SAID EXHAUST VALVE MEMBER, SAID SECOND FORCE BEING GENERATED BY THE PRESSURE WITHIN SAID THIRD CHAMBER, SAID EXHAUST VALVE MEMBER NORMALLY BEING UNSEATED TO PERMIT EXHAUST FROM SAID THIRD CHAMBER TO ATMOSPHERE AT A RATE
Claim 2
Dependent Claim
167 words
IN A PNEUMATIC RELAY VALVE TO BE USED IN THE CONTROL OF A VARIABLE, THE COMBINATION COMPRISING: CASING MEANS PROVIDING A FIRST CHAMBER ADAPTED TO BE CONNECTED TO A SOURCE OF PNEUMATIC SUPPLY PRESSURE, A SECOND CHAMBER ADAPTED TO RECEIVE CONTROL PRESSURE FOR OPERATING A CONTROL INSTRUMENTALITY, AND A THIRD CHAMBER HAVING A PORT FOR EXHAUST TO ATMOSPHERE; AN EXHAUST VALVE MEMBER COOPERATIVE WITH SAID THIRD CHAMBER EXHAUST PORT FOR CONTROLLING EXHAUST OF SAID THIRD CHAMBER TO ATMOSPHERE; MEANS FOR SENSING THE MAGNITUDE OF THE CONTROLLED VARIABLE AND FOR EXERTING A FIRST FORCE ON SAID EXHAUST VALVE MEMBER TOWARD A CLOSED POSITION, THE MAGNITUDE OF SAID FIRST FORCE BEING DEPENDENT UPON THE MAGNITUDE OF THE CONTROLLED VARIABLE, SAID EXHAUST VALVE MEMBER BEING FURTHER ACTED UPON BY A SECOND FORCE TENDING TO UNSEAT SAID EXHAUST VALVE MEMBER, SAID SECOND FORCE BEING GENERATED BY THE PRESSURE WITHIN SAID THIRD CHAMBER, SAID EXHAUST VALVE MEMBER NORMALLY BEING UNSEATED TO PERMIT EXHAUST FROM SAID THIRD CHAMBER TO ATMOSPHERE AT A RATE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |