Patent US3322145A successfully refreshed from Google Patents.
US3322145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable constant flow valve
Assignee: Autotrol Corp
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Filing: 1964-11-02
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Granted: 1967-05-30
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 David G Prosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:42
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0146; G05D7/016; F; F16; F16K; F16K1/00; F16K1/32; F16K1/52; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T137/7873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN ADJUSTABLE CONSTANT FLOW VALVE COMPRISING: A VALVE BODY INCLUDING AN INLET AND AN OUTLET; MEANS FORMING DISCRETE CONTROL PASSAGE MEANS WITHIN SAID VALVE BODY; A FLUID PRESSURE RESPONSIVE MEMBER DISPOSED WITHIN SAID VALVE BODY AND RESPONSIVE TO THE FLOW OF INCOMING FLUID TO SEAT AGAINST SAID CONTROL PASSAGE MEANS, SAID CONTROL PASSAGE MEANS HAVING AN OPEN CROSS SECTIONAL AREA FOR THE FLOW OF FLUID FROM SAID INLET TO SAID OUTLET WHEN SAID MEMBER IS SEATED THEREAGAINST, ONE OF SAID CONTROL PASSAGE MEANS AND SAID MEMBER BEING DEFORMABLE WHEREBY SAID OPEN CROSS SECTIONAL AREA IS REDUCED IN DIRECT PROPORTION TO THE PRESSURE OF INCOMING FLUID; AND MEANS FOR OBSTRUCTING A SELECTABLE PORTION OF SAID OPEN CROSS SECTIONAL AREA TO ADJUST THE RATE OF FLUID TO BE MAINTAINED.
Claim 2
Dependent Claim
127 words
AN ADJUSTABLE CONSTANT FLOW VALVE COMPRISING: A VALVE BODY INCLUDING AN INLET AND AN OUTLET; MEANS FORMING DISCRETE CONTROL PASSAGE MEANS WITHIN SAID VALVE BODY; A FLUID PRESSURE RESPONSIVE MEMBER DISPOSED WITHIN SAID VALVE BODY AND RESPONSIVE TO THE FLOW OF INCOMING FLUID TO SEAT AGAINST SAID CONTROL PASSAGE MEANS, SAID CONTROL PASSAGE MEANS HAVING AN OPEN CROSS SECTIONAL AREA FOR THE FLOW OF FLUID FROM SAID INLET TO SAID OUTLET WHEN SAID MEMBER IS SEATED THEREAGAINST, ONE OF SAID CONTROL PASSAGE MEANS AND SAID MEMBER BEING DEFORMABLE WHEREBY SAID OPEN CROSS SECTIONAL AREA IS REDUCED IN DIRECT PROPORTION TO THE PRESSURE OF INCOMING FLUID; AND MEANS FOR OBSTRUCTING A SELECTABLE PORTION OF SAID OPEN CROSS SECTIONAL AREA TO ADJUST THE RATE OF FLUID TO BE MAINTAINED.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |