Patent US3118494A successfully refreshed from Google Patents.
US3118494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination pressure regulator and control devices
Assignee: Robertshaw Controls Co
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Filing: 1959-02-02
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Granted: 1964-01-21
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Richard H Yost
- 👤 John P Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:25
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22; F23; F23N; F23N1/00; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; G05D16/2095; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825; Y10T137/7834
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A FLUID FLOW CONTROL DEVICE COMPRISING: A CASING FORMED WITH AN INLET, AN OUTLET, AND A FLOW PASSAGE EXTENDING BETWEEN SAID INLET AND SAID OUTLET; VALVE MEANS DISPOSED IN SAID FLOW PASSAGE FOR CONTROLLING A FLOW OF FLUID THROUGH SAID CASING, SAID VALVE MEANS COMPRISING A PAIR OF VALVE ELEMENTS MOVABLE RELATIVE TO ONE ANOTHER; FIRST PRESSURE OPERATED MEANS DISPOSED WITHIN SAID CASING AND BEING OPERABLY CONNECTED TO MOVE ONE OF SAID VALVE ELEMENTS IN RESPONSE TO CHANGES IN PRESSURE AT SAID INLET; SECOND PRESSURE OPERATED MEANS DISPOSED IN SAID CASING AND BEING OPERABLY CONNECTED TO MOVE THE OTHER OF SAID VALVE ELEMENTS IN RESPONSE TO CHANGES IN PRESSURE AT SAID OUTLET; CONTROL CHAMBER MEANS POSITIONED ADJACENT ONE OF SAID PRESSURE OPERATED MEANS; AND MEANS OPERABLY CONNECTED TO SAID CONTROL CHAMBER MEANS FOR SELECTIVELY ADMITTING A FLUID THERETO TO CAUSE SAID VALVE ELEMENTS TO MOVE RELATIVE TO ONE ANOTHER TO PROVIDE CONTROL SHUT-OFF OF FLUID FLOWING THROUGH SAID CASING.
Claim 2
Dependent Claim
159 words
A FLUID FLOW CONTROL DEVICE COMPRISING: A CASING FORMED WITH AN INLET, AN OUTLET, AND A FLOW PASSAGE EXTENDING BETWEEN SAID INLET AND SAID OUTLET; VALVE MEANS DISPOSED IN SAID FLOW PASSAGE FOR CONTROLLING A FLOW OF FLUID THROUGH SAID CASING, SAID VALVE MEANS COMPRISING A PAIR OF VALVE ELEMENTS MOVABLE RELATIVE TO ONE ANOTHER; FIRST PRESSURE OPERATED MEANS DISPOSED WITHIN SAID CASING AND BEING OPERABLY CONNECTED TO MOVE ONE OF SAID VALVE ELEMENTS IN RESPONSE TO CHANGES IN PRESSURE AT SAID INLET; SECOND PRESSURE OPERATED MEANS DISPOSED IN SAID CASING AND BEING OPERABLY CONNECTED TO MOVE THE OTHER OF SAID VALVE ELEMENTS IN RESPONSE TO CHANGES IN PRESSURE AT SAID OUTLET; CONTROL CHAMBER MEANS POSITIONED ADJACENT ONE OF SAID PRESSURE OPERATED MEANS; AND MEANS OPERABLY CONNECTED TO SAID CONTROL CHAMBER MEANS FOR SELECTIVELY ADMITTING A FLUID THERETO TO CAUSE SAID VALVE ELEMENTS TO MOVE RELATIVE TO ONE ANOTHER TO PROVIDE CONTROL SHUT-OFF OF FLUID FLOWING THROUGH SAID CASING.
References Cited (Backward Citations)
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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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |