Patent US3250469A successfully refreshed from Google Patents.
US3250469A
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US
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Pure fluid function generating system
Assignee: Bowles Engineering Corp
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Filing: 1963-08-05
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Granted: 1966-05-10
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 John R Colston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:23
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; F15C1/146; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A PURE FLUID FUNCTION GENERATOR COMPRISING IN COMBINATION A PURE FLUID AMPLIFIER INCLUDING MEANS FOR ISSUING A POWER STREAM INTO THE AMPLIFIER, FLUID OUTPUT MEANS FOR RECEIVING THE POWER STREAM, THE POWER STREAM BEING DEFLECTABLE BY A CONTROL STREAM SO AS TO VARY THE QUANTITIES OF FLUID RECEIVED BY SAID OUTPUT MEANS AS A FUNCTION OF THE CONROL STREAM, A PURE FLUID RESISTANCE HAVING A GENERALLY LINEAR WEIGHT FLOW VERSUS PRESSURE CHARACTERISTIC, A FLUID ELEMENT HAVING A FLOW CHARACTERISTIC SUCH THAT THE WEIGHT FLOW THROUGH SAID ELEMENT VARIES AS THE SQUARE ROOT OF THE PRESSURE DROP THEREACROSS, MEANS FOR PRODUCING A FLUID INPUT SIGNAL, AND MEANS INTERCONNECTING SAID MEANS FOR PRODUCING, SAID FLUID ELEMENT AND SAID FLUID RESISTANCE SUCH AS TO PRODUCE A FLUID FLOW WHICH IS AN EXPONENTIAL FUNCTION OF SAID INPUT SIGNAL AND MEANS FOR EMPLOYING SAID FLUID FLOW AS THE CONTROL STREAM FOR SAID FLUID AMPLIFIER.
Claim 2
Dependent Claim
149 words
A PURE FLUID FUNCTION GENERATOR COMPRISING IN COMBINATION A PURE FLUID AMPLIFIER INCLUDING MEANS FOR ISSUING A POWER STREAM INTO THE AMPLIFIER, FLUID OUTPUT MEANS FOR RECEIVING THE POWER STREAM, THE POWER STREAM BEING DEFLECTABLE BY A CONTROL STREAM SO AS TO VARY THE QUANTITIES OF FLUID RECEIVED BY SAID OUTPUT MEANS AS A FUNCTION OF THE CONROL STREAM, A PURE FLUID RESISTANCE HAVING A GENERALLY LINEAR WEIGHT FLOW VERSUS PRESSURE CHARACTERISTIC, A FLUID ELEMENT HAVING A FLOW CHARACTERISTIC SUCH THAT THE WEIGHT FLOW THROUGH SAID ELEMENT VARIES AS THE SQUARE ROOT OF THE PRESSURE DROP THEREACROSS, MEANS FOR PRODUCING A FLUID INPUT SIGNAL, AND MEANS INTERCONNECTING SAID MEANS FOR PRODUCING, SAID FLUID ELEMENT AND SAID FLUID RESISTANCE SUCH AS TO PRODUCE A FLUID FLOW WHICH IS AN EXPONENTIAL FUNCTION OF SAID INPUT SIGNAL AND MEANS FOR EMPLOYING SAID FLUID FLOW AS THE CONTROL STREAM FOR SAID FLUID AMPLIFIER.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |