Patent US3176920A successfully refreshed from Google Patents.
US3176920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated pump
Assignee: Honeywell Inc
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Filing: 1961-05-26
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Granted: 1965-04-06
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Asbjorn M Severson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:00
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0081; F04B43/009; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F04B45/00; F04B45/04; F04B45/053; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127; F15; F15B; F15B21/00; F15B21/12; F15C; F15C1/00; F15C1/008; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
IN A FLUID PRESSURE DRIVEN PUMP SYSTEM INCLUDING: FLUID AMPLIFIER MEANS INCLUDING AN INLET CONNECTED TO A SOURCE OF FLUID; SAID FLUID AMPLIFIER MEANS HAVING OUTLET MEANS; A FIRST OF SAID OUTLET MEANS PROVIDING A CONTINUOUS FLOW PASSAGE FOR SAID FLUID; A SECOND OF SAID OUTLET MEANS OBSTRUCTED BY PUMP MEANS WHICH IS SUBJECTED TO SAID FLUID; CONTROL MEANS AT SAID INLET TO CAUSE A PRESSURE DIFFERENTIAL ACROSS SAID INLET FLUID FLOW TO SWITCH SAID FLUID BETWEEN SAID OUTLET MENS; AND SAID CONTROL MEANS INCLUDING CONNECTION MEANS CONNECTING SAID CONTROL MEANS TO SAID SECOND OUTLET MEANS TO FEED BACK A PRESSURE TO SWITCH SAID AMPLIFIER INLET BETWEEN SAID OUTLET MEANS; AND INLET DIRECTED AT SAID OUTLET MEANS SO AS TO NORMALLY BUILD UP A PRESSURE AT SAID PUMP MEANS, SAID CONNECTION MEANS, AND SAID CONTROL MEANS; SAID PRESSURE IN SAID CONNECTION MEANS AND SAID CONTROL MEANS SWITCHING SAID AMPLIFIER MEANS TO RELIEVE SAID PRESSURE BUILDUP AND TO IN TURN OPERATE SAID PUMP MEANS.
Claim 2
Dependent Claim
163 words
IN A FLUID PRESSURE DRIVEN PUMP SYSTEM INCLUDING: FLUID AMPLIFIER MEANS INCLUDING AN INLET CONNECTED TO A SOURCE OF FLUID; SAID FLUID AMPLIFIER MEANS HAVING OUTLET MEANS; A FIRST OF SAID OUTLET MEANS PROVIDING A CONTINUOUS FLOW PASSAGE FOR SAID FLUID; A SECOND OF SAID OUTLET MEANS OBSTRUCTED BY PUMP MEANS WHICH IS SUBJECTED TO SAID FLUID; CONTROL MEANS AT SAID INLET TO CAUSE A PRESSURE DIFFERENTIAL ACROSS SAID INLET FLUID FLOW TO SWITCH SAID FLUID BETWEEN SAID OUTLET MENS; AND SAID CONTROL MEANS INCLUDING CONNECTION MEANS CONNECTING SAID CONTROL MEANS TO SAID SECOND OUTLET MEANS TO FEED BACK A PRESSURE TO SWITCH SAID AMPLIFIER INLET BETWEEN SAID OUTLET MEANS; AND INLET DIRECTED AT SAID OUTLET MEANS SO AS TO NORMALLY BUILD UP A PRESSURE AT SAID PUMP MEANS, SAID CONNECTION MEANS, AND SAID CONTROL MEANS; SAID PRESSURE IN SAID CONNECTION MEANS AND SAID CONTROL MEANS SWITCHING SAID AMPLIFIER MEANS TO RELIEVE SAID PRESSURE BUILDUP AND TO IN TURN OPERATE SAID PUMP MEANS.
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |