Patent US3225541A successfully refreshed from Google Patents.
US3225541A
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US
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Hydraulic anti-shock device
Assignee: Simca Automobiles SA
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Filing: 1965-02-03
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Granted: 1965-12-28
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Expires: 1985-02-03
Abstract
No abstract record available.
Inventors
- 👤 Piret Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:56
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/046; F15B11/048; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/32; F15B2211/321; F15B2211/325; F15B2211/327; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5157; F15B2211/52; F15B2211/528; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/7054; F15B2211/755; F15B2211/77; F15B2211/7725; Y; Y10; Y10S; Y10S60/00; Y10S60/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A HYDRAULIC ANTI-SHOCK DEVICE ASSOCIATED WITH A HYDRAULIC JACK FURNISHED WITH A PISTON THE TWO FACES OF WHICH, THROUGH THE INTERMEDIARY OF A PRINCIPAL DISTRIBUTOR CONTROLLED ALTERNATELY BY TWO ELECTRO-MAGNETS, ARE ADAPTED TO BE CONNECTED EITHER ALTERNATELY WITH THE DELIVERY CIRCUIT OF A PUMP OR THE PUMP INLET BY ITS RETURN CIRCUIT, OR SIMULTANEOUSLY WIITH SAID TWO CIRCUITS, AND COMPRISING: IN THE DELIVERY CIRCUIT DOWNSTREAM OF THE PRINCIPAL REGULATOR, A PRESSURE REGULATOR FURNISHED WITH A CLOSING VALVE INTERPOSED BETWEEN THE DELIVERY CIRCUIT AND THE RETURN CIRCUIT, AND RIGIDLY CONNECTED TO A PISTON DEFINING TWO CHAMBERS THE LOWER CHAMBER OF WHICH COMMUNICATES DIRECTLY WITH THE DELIVERY CIRCUIT AND THE UPPER CHAMBER OF WHICH, FURNISHED WITH A RESTRAINING SPRING URGING THE VALVE INTO ITS CLOSING POSITION, COMMUNICATES THROUGH THE INTERMEDIARY OF A CALIBRATED CHANNEL WITH THE DELIVERY CIRCUIT; A MASTER DISTRIBUTOR CONNECTED, ON THE ONE HAND, TO THE UPPER CHAMBER OF THE VALVE PISTON AND, ON THE OTHER HAND, TO THE RETURN CIRCUIT, AND ADAPTED TO BE CONTROLLED BY AN ELECTRO-MAGNET IN SUCH A MANNER AS TO DESTROY OR ESTABLISH THE COMMUNICATION BETWEEN THE UPPER CHAMBER OF SAID VALVE PISTON AND THE RETURN CIRCUIT; AND AN ELECTRIC CIRCUIT FURNISHED WITH SWITCHES AND RELAYS FOR STARTING AND STOPPING A MOTOR DRIVING THE
Claim 2
Dependent Claim
209 words
A HYDRAULIC ANTI-SHOCK DEVICE ASSOCIATED WITH A HYDRAULIC JACK FURNISHED WITH A PISTON THE TWO FACES OF WHICH, THROUGH THE INTERMEDIARY OF A PRINCIPAL DISTRIBUTOR CONTROLLED ALTERNATELY BY TWO ELECTRO-MAGNETS, ARE ADAPTED TO BE CONNECTED EITHER ALTERNATELY WITH THE DELIVERY CIRCUIT OF A PUMP OR THE PUMP INLET BY ITS RETURN CIRCUIT, OR SIMULTANEOUSLY WIITH SAID TWO CIRCUITS, AND COMPRISING: IN THE DELIVERY CIRCUIT DOWNSTREAM OF THE PRINCIPAL REGULATOR, A PRESSURE REGULATOR FURNISHED WITH A CLOSING VALVE INTERPOSED BETWEEN THE DELIVERY CIRCUIT AND THE RETURN CIRCUIT, AND RIGIDLY CONNECTED TO A PISTON DEFINING TWO CHAMBERS THE LOWER CHAMBER OF WHICH COMMUNICATES DIRECTLY WITH THE DELIVERY CIRCUIT AND THE UPPER CHAMBER OF WHICH, FURNISHED WITH A RESTRAINING SPRING URGING THE VALVE INTO ITS CLOSING POSITION, COMMUNICATES THROUGH THE INTERMEDIARY OF A CALIBRATED CHANNEL WITH THE DELIVERY CIRCUIT; A MASTER DISTRIBUTOR CONNECTED, ON THE ONE HAND, TO THE UPPER CHAMBER OF THE VALVE PISTON AND, ON THE OTHER HAND, TO THE RETURN CIRCUIT, AND ADAPTED TO BE CONTROLLED BY AN ELECTRO-MAGNET IN SUCH A MANNER AS TO DESTROY OR ESTABLISH THE COMMUNICATION BETWEEN THE UPPER CHAMBER OF SAID VALVE PISTON AND THE RETURN CIRCUIT; AND AN ELECTRIC CIRCUIT FURNISHED WITH SWITCHES AND RELAYS FOR STARTING AND STOPPING A MOTOR DRIVING THE
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |