US3204573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic installations with multiple pressures
Assignee: SFERMA FRANCAISE D'ENTRETIEN ET DE REPARATION DE MATERIEL AERONAUTIQUE Ste
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Filing: 1963-08-22
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Granted: 1965-09-07
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Mercier Pierre Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:10
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86059; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86662
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
A HYDRAULIC FLUID PUMPING AND STORAGE PLANT FOR PRODUCING HYDRAULIC FORCES COMPRISING, IN COMBINATION, A HIGH PRESSURE ACCUMULATOR, AT LEAST ONE ACCUMULATOR CALIBRATED TO A PRESSURE LOWER THAN THAT OF SAID HIGH PRESSURE ACCUMULATOR, A LIQUID STORAGE RESERVOIR, A CONTINUOUSLY OPERATING PUMP HAVING AN INLET AND OUTLET, SAID PUMP BEING ADAPTED TO SUPPLY LIQUID FROM SAID RESERVOIR TO EACH OF SAID ACCUMULATORS, A FIRST VALVE HAVING A FIRST PORT COMMUNICATING WITH SAID LOW PRESSURE ACCUMULATOR A SECOND PORT COMMUNICATING WITH SAID RESERVOIR, AND A THIRD PORT OF THE FIRST VALVE, AND SECOND RESILIENT MEANS IN IN ONE POSITION TO CONNECT SAID THIRD PORT WITH SAID FIRST PORT AND IN ANOTHER POSITION TO CONNECT SAID THIRD PORT WITH SAID SECOND PORT, FIRST RESILIENT MEANS IN SAID VALVE TO URGE SAID MEMBER TOWARDS SAID ANOTHER POSITION THEREOF, SAID MEMBER BEING MOVABLE TOWARDS SAID ONE POSITION THEREOF AGAINST THE ACTION OF SAID RESILIENT MEANS IN RESPONSE TO LIQUID PRESSURE STORED IN SAID LOW PRESSURE ACCUMULATOR, A SECOND VALVE CONNECTED WITH SAID HIGH PRESSURE ACCUMULATOR, WITH THE PUMP INLET, THE PUMP OUTLET, SAID RESERVOIR AND WITH SAID THIRD PORT OF THE FIRST VALVE, A MOVABLE VALVE MEMBER FOR SAID SECOND VALVE EFFECTIVE IN ONE POSITION TO CONNECT SAID PUMP OUTLET WITH SAID PUMP INLET AND WITH SAID RESERVOIR, AND EFFECTIVE IN ANOTHER POSITION TO CONNECT SAID PUMP OUTLET WITH SAID
Claim 2
Dependent Claim
226 words
A HYDRAULIC FLUID PUMPING AND STORAGE PLANT FOR PRODUCING HYDRAULIC FORCES COMPRISING, IN COMBINATION, A HIGH PRESSURE ACCUMULATOR, AT LEAST ONE ACCUMULATOR CALIBRATED TO A PRESSURE LOWER THAN THAT OF SAID HIGH PRESSURE ACCUMULATOR, A LIQUID STORAGE RESERVOIR, A CONTINUOUSLY OPERATING PUMP HAVING AN INLET AND OUTLET, SAID PUMP BEING ADAPTED TO SUPPLY LIQUID FROM SAID RESERVOIR TO EACH OF SAID ACCUMULATORS, A FIRST VALVE HAVING A FIRST PORT COMMUNICATING WITH SAID LOW PRESSURE ACCUMULATOR A SECOND PORT COMMUNICATING WITH SAID RESERVOIR, AND A THIRD PORT OF THE FIRST VALVE, AND SECOND RESILIENT MEANS IN IN ONE POSITION TO CONNECT SAID THIRD PORT WITH SAID FIRST PORT AND IN ANOTHER POSITION TO CONNECT SAID THIRD PORT WITH SAID SECOND PORT, FIRST RESILIENT MEANS IN SAID VALVE TO URGE SAID MEMBER TOWARDS SAID ANOTHER POSITION THEREOF, SAID MEMBER BEING MOVABLE TOWARDS SAID ONE POSITION THEREOF AGAINST THE ACTION OF SAID RESILIENT MEANS IN RESPONSE TO LIQUID PRESSURE STORED IN SAID LOW PRESSURE ACCUMULATOR, A SECOND VALVE CONNECTED WITH SAID HIGH PRESSURE ACCUMULATOR, WITH THE PUMP INLET, THE PUMP OUTLET, SAID RESERVOIR AND WITH SAID THIRD PORT OF THE FIRST VALVE, A MOVABLE VALVE MEMBER FOR SAID SECOND VALVE EFFECTIVE IN ONE POSITION TO CONNECT SAID PUMP OUTLET WITH SAID PUMP INLET AND WITH SAID RESERVOIR, AND EFFECTIVE IN ANOTHER POSITION TO CONNECT SAID PUMP OUTLET WITH SAID
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |