US3443582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure control valve
Assignee: OZONE METAL PRODUCTS CORP
•
Filing: 1966-03-30
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Granted: 1969-05-13
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Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Bramwell R Linden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:47
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/34; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A SYSTEM FOR GOVERNING THE PRESSURE DIFFERENCE BETWEEN TWO VARIABLE PRESSURE INCLUDING IN COMBINATION, A FLUID PASSAGE HAVING AN INLET PORT AND AN OUTLET PORT AND A POSITIONABLE ELEMENT MOVABLY MOUNTED IN SAID PASSAGE FOR CONTROLLING THE COUPLING BETWEEN SAID PORTS, SAID ELEMENT BEING PROVIDED WITH FIRST AND SECOND AND CONTROL AREAS TO WHICH PRESSURE MAY BE APPLIED TO POSITION SAID ELEMENT, A SOURCE OF A FIRST VARIABLE PRESSURE, MEANS CONNECTING SAID SOURCE TO SAID INLET PORT TO PRODUCE A SECOND VARIABLE PRESSURE AT SAID OUTLET PORT, MEANS FOR APPLYING SAID FIRST AND SECOND PRESSURES RESPECTIVELY TO SAID FIRST AND SECOND AREAS TO URGE SAID ELEMENT IN A DIRECTION TO REDUCE THE COUPLING BETWEEN SAID PORTS, A PRESSURE REDUCTION ORIFICE HAVING AN INLET AND AN OUTLET, MEANS FOR APPLYING SAID FIRST PRESSURE TO SAID ORIFICE INLET, AN ACTUATABLE AUXILIARY VALVE, MEANS CONNECTING SAID AUXILIARY VALVE BETWEEN SAID ORIFICE OUTLET AND A PRESSURE LESS THAN SAID SECONE PRESSURE, MEANS FOR ACTUATING SAID AUXILIARY VALVE TO
Claim 2
Independent Claim
164 words
A SYSTEM FOR GOVERNING THE PRESSURE DIFFERENCE BETWEEN TWO VARIABLE PRESSURE INCLUDING IN COMBINATION, A FLUID PASSAGE HAVING AN INLET PORT AND AN OUTLET PORT AND A POSITIONABLE ELEMENT MOVABLY MOUNTED IN SAID PASSAGE FOR CONTROLLING THE COUPLING BETWEEN SAID PORTS, SAID ELEMENT BEING PROVIDED WITH FIRST AND SECOND AND CONTROL AREAS TO WHICH PRESSURE MAY BE APPLIED TO POSITION SAID ELEMENT, A SOURCE OF A FIRST VARIABLE PRESSURE, MEANS CONNECTING SAID SOURCE TO SAID INLET PORT TO PRODUCE A SECOND VARIABLE PRESSURE AT SAID OUTLET PORT, MEANS FOR APPLYING SAID FIRST AND SECOND PRESSURES RESPECTIVELY TO SAID FIRST AND SECOND AREAS TO URGE SAID ELEMENT IN A DIRECTION TO REDUCE THE COUPLING BETWEEN SAID PORTS, A PRESSURE REDUCTION ORIFICE HAVING AN INLET AND AN OUTLET, MEANS FOR APPLYING SAID FIRST PRESSURE TO SAID ORIFICE INLET, AN ACTUATABLE AUXILIARY VALVE, MEANS CONNECTING SAID AUXILIARY VALVE BETWEEN SAID ORIFICE OUTLET AND A PRESSURE LESS THAN SAID SECONE PRESSURE, MEANS FOR ACTUATING SAID AUXILIARY VALVE TO
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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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |