US3384102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure control valve
Assignee: OZONE METAL PRODUCTS CORP
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Filing: 1964-04-29
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Granted: 1968-05-21
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Walter A Hickox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:15
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/36; B60T8/3695; F; F15; F15B; F15B11/00; F15B11/02; G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/101; G05D16/20; G05D16/2093; G05D16/2097; F15B2211/00; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/50554; F15B2211/52; F15B2211/526; F15B2211/528; F15B2211/57; F15B2211/60; F15B2211/605; F15B2211/6051; F15B2211/635; F15B2211/6355; F15B2211/665; F15B2211/6653; F15B2211/70; F15B2211/76; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2544; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A VALVE SYSTEM FOR GOVERNING THE PRESSURE DIFFERENCE BETWEEN A VARIABLE SUPPLY PRESSURE AND A VARIABLE LOAD PRESSURE INCLUDING IN COMBINATION A MAIN VALVE HAVING AN INLET PORT AND AN OUTLET PORT AND A POSITIONABLE ELEMENT FOR CONTROLLING THE COUPLING BETWEEN SAID INLET AND OUTLET PORTS, SAID VALVE HAVING A RESPECTIVE CONTROL PORT AT EACH END OF SAID POSITIONABLE ELEMENT, A SOURCE OF VARIABLE SUPPLY PRESSURE, MEANS CONNECTING SAID SOURCE TO SAID INLET PORT TO PROVIDE SAID LOAD PRESSURE AT SAID OUTLET PORT, AN AUXILIARY VALVE COMPRISING AN INLET CHANNEL TO WHICH SUPPLY PRESSURE IS APPLIED, AN EXHAUST CHANNEL CONNECTED TO A PRESSURE LESS THAN SAID VARIABLE LOAD PRESSURE, PORTS RESPECTIVELY CONNECTED TO SAID MAIN VALVE CONTROL PORTS AND A POSITIONABLE MEMBER MOVABLE TO A FIRST POSITION TO CONNECT ONE OF SAID AUXILIARY VALVE PORTS TO SAID INLET CHANNEL WHILE CONNECTING THE OTHER OF SAID AUXILIARY VALVE PORTS
Claim 2
Dependent Claim
148 words
A VALVE SYSTEM FOR GOVERNING THE PRESSURE DIFFERENCE BETWEEN A VARIABLE SUPPLY PRESSURE AND A VARIABLE LOAD PRESSURE INCLUDING IN COMBINATION A MAIN VALVE HAVING AN INLET PORT AND AN OUTLET PORT AND A POSITIONABLE ELEMENT FOR CONTROLLING THE COUPLING BETWEEN SAID INLET AND OUTLET PORTS, SAID VALVE HAVING A RESPECTIVE CONTROL PORT AT EACH END OF SAID POSITIONABLE ELEMENT, A SOURCE OF VARIABLE SUPPLY PRESSURE, MEANS CONNECTING SAID SOURCE TO SAID INLET PORT TO PROVIDE SAID LOAD PRESSURE AT SAID OUTLET PORT, AN AUXILIARY VALVE COMPRISING AN INLET CHANNEL TO WHICH SUPPLY PRESSURE IS APPLIED, AN EXHAUST CHANNEL CONNECTED TO A PRESSURE LESS THAN SAID VARIABLE LOAD PRESSURE, PORTS RESPECTIVELY CONNECTED TO SAID MAIN VALVE CONTROL PORTS AND A POSITIONABLE MEMBER MOVABLE TO A FIRST POSITION TO CONNECT ONE OF SAID AUXILIARY VALVE PORTS TO SAID INLET CHANNEL WHILE CONNECTING THE OTHER OF SAID AUXILIARY VALVE PORTS
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |