US3232238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self regulating variable flow pumps
Assignee: Individual
•
Filing: 1961-09-28
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Granted: 1966-02-01
•
Expires: 1981-09-28
Abstract
No abstract record available.
Inventors
- 👤 Faisandier Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:10
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/08; F04B1/00; F04B1/12; F04B1/26; F04B1/30; F04B1/32; F04B1/328
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN COMBINATION, A VARIABLE DISPLACEMENT PUMPS IN WHICH THE DISPLACEMENT OF THE PUMP IS A FUNCTION OF THE POSITION OF A PUMP ELEMENT WITH RESPECT TO A DATUM: A DISCHARGE CONDUIT FROM SAID PUMP BODY TO LEAD LIQUID TO A POINT OF USE OF THE LIQUID; A MOVABLE ABUTMENT; A PRESSURE SENSING MEANS RESILIENTLY SUPPORTED BY SAID MOVABLE ABUTMENT TO SENSE CHANGES OF PRESSURE WITHIN SAID DISCHARGE CONDUIT; FIRST CONTROL MEANS OPERATIVELY CONNECTING SAID PRESSURE SENSING MEANS TO SAID PUMP ELEMENT TO MOVE SAID PUMP ELEMENT RELATIVE TO SAID DATUM TO REDUCE THE DISPLACEMENT OF SAID PUMP UPON AN INCREASE OF PRESSURE AND TO MOVE SAID PUMP ELEMENT TO INCREASE THE DISPLACEMENT OF SAID PUMP UPON A DECREASE OF PRESSURE; SECOND CONTROL MEANS OPERATIVELY CONNECTED TO SAID PUMP ELEMENT TO BE MOVED BY MOVEMENT OF SAID PUMP ELEMENT A DISTANCE EXPRESSING A FUNCTION OF THE PUMP DISPLACEMENT; AND HYDRAULIC MEANS ACTUATED BY FLUID UNDER PRESSURE TO POSITION SAID ABUTMENT WITH RESPECT TO SAID PRESSURE SENSING MEANS.
Claim 2
Dependent Claim
166 words
IN COMBINATION, A VARIABLE DISPLACEMENT PUMPS IN WHICH THE DISPLACEMENT OF THE PUMP IS A FUNCTION OF THE POSITION OF A PUMP ELEMENT WITH RESPECT TO A DATUM: A DISCHARGE CONDUIT FROM SAID PUMP BODY TO LEAD LIQUID TO A POINT OF USE OF THE LIQUID; A MOVABLE ABUTMENT; A PRESSURE SENSING MEANS RESILIENTLY SUPPORTED BY SAID MOVABLE ABUTMENT TO SENSE CHANGES OF PRESSURE WITHIN SAID DISCHARGE CONDUIT; FIRST CONTROL MEANS OPERATIVELY CONNECTING SAID PRESSURE SENSING MEANS TO SAID PUMP ELEMENT TO MOVE SAID PUMP ELEMENT RELATIVE TO SAID DATUM TO REDUCE THE DISPLACEMENT OF SAID PUMP UPON AN INCREASE OF PRESSURE AND TO MOVE SAID PUMP ELEMENT TO INCREASE THE DISPLACEMENT OF SAID PUMP UPON A DECREASE OF PRESSURE; SECOND CONTROL MEANS OPERATIVELY CONNECTED TO SAID PUMP ELEMENT TO BE MOVED BY MOVEMENT OF SAID PUMP ELEMENT A DISTANCE EXPRESSING A FUNCTION OF THE PUMP DISPLACEMENT; AND HYDRAULIC MEANS ACTUATED BY FLUID UNDER PRESSURE TO POSITION SAID ABUTMENT WITH RESPECT TO SAID PRESSURE SENSING 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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |