US3217821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power plant for land vehicles
Assignee: Sigma
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Filing: 1963-09-10
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Granted: 1965-11-16
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Expires: 1983-09-10
Abstract
No abstract record available.
Inventors
- 👤 Dumas Francois
- 👤 Bitton Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:03
CPC Classifications
B; B62; B62D; B62D11/00; B62D11/001; B62D11/005; B60; B60K; B60K17/00; B60K17/04; B60K17/10; B62D11/02; B62D11/06; F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/44; F16H61/456; F16H61/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A LAND VEHICLE HAVING DRIVEN VEHICLE PROPELLING MEMBERS DISPOSED RESPECTIVELY ON THE RIGHT HAND SIDE AND THE LEFT HAND SIDE OF THE VEHICLE, A POWER PLANT FOR DRIVING SAID PROPELLING MEMBERS WHICH COMPRISES, IN COMBINATION, AN INTERNAL COMBUSTION ENGINE, A VARIABLE DELIVERY PUMP DRIVE BY SAID ENGINE, TWO HYDRAULIC MOTORS EACH MECHANICALLY COUPLED WITH ONE OF SAID PROPELLING MEMBERS, RESPECTIVELY, A FIRST AND SECOND HYDRAULIC CIRCUIT CONNECTING THE DELIVERY OF SAID PUMP WITH SAID TWO RESPECTIVE HYDRAULIC MOTORS IN PARALLEL, RESPECTIVELY, TWO PUMPS MECHANICALLY CONNECTED WITH THE VEHICLE, PROPELLING MEMBERS, RESPECTIVELY, FOR BEING DRIVEN BY THEM, TWO DISTINCT DELIVERY CIRCUITS FOR THE TWO SECOND MENTIONED PUMPS RESPECTIVELY, INCLUDING EACH A VARIABLE SECTION THROTTLED PASSAGE, VALVE MEANS FOR CONTROLLING BOTH OF SAID HYDRAULIC CIRCUITS TO DISTRIBUTE BETWEEN THEM THE FLOW OF SAID FIRST MENTIONED PUMP, MEANS OPERATIVE BY THE PRESSURES IN SAID RESPECTIVELY DELIVERY CIRCUIT FOR CONTROLLING SAID VALVE MEANS IN RESPONSE TO THE DIFFERENCE OF THE RESPECTIVE DELIVERY PRESSURES OF THE TWO SECOND MENTIONED PUMPS, AND MANUALLY OPERATED MEANS FOR CONTROLLING SAID TWO THROTTLED PASSAGES.
Claim 2
Dependent Claim
176 words
IN A LAND VEHICLE HAVING DRIVEN VEHICLE PROPELLING MEMBERS DISPOSED RESPECTIVELY ON THE RIGHT HAND SIDE AND THE LEFT HAND SIDE OF THE VEHICLE, A POWER PLANT FOR DRIVING SAID PROPELLING MEMBERS WHICH COMPRISES, IN COMBINATION, AN INTERNAL COMBUSTION ENGINE, A VARIABLE DELIVERY PUMP DRIVE BY SAID ENGINE, TWO HYDRAULIC MOTORS EACH MECHANICALLY COUPLED WITH ONE OF SAID PROPELLING MEMBERS, RESPECTIVELY, A FIRST AND SECOND HYDRAULIC CIRCUIT CONNECTING THE DELIVERY OF SAID PUMP WITH SAID TWO RESPECTIVE HYDRAULIC MOTORS IN PARALLEL, RESPECTIVELY, TWO PUMPS MECHANICALLY CONNECTED WITH THE VEHICLE, PROPELLING MEMBERS, RESPECTIVELY, FOR BEING DRIVEN BY THEM, TWO DISTINCT DELIVERY CIRCUITS FOR THE TWO SECOND MENTIONED PUMPS RESPECTIVELY, INCLUDING EACH A VARIABLE SECTION THROTTLED PASSAGE, VALVE MEANS FOR CONTROLLING BOTH OF SAID HYDRAULIC CIRCUITS TO DISTRIBUTE BETWEEN THEM THE FLOW OF SAID FIRST MENTIONED PUMP, MEANS OPERATIVE BY THE PRESSURES IN SAID RESPECTIVELY DELIVERY CIRCUIT FOR CONTROLLING SAID VALVE MEANS IN RESPONSE TO THE DIFFERENCE OF THE RESPECTIVE DELIVERY PRESSURES OF THE TWO SECOND MENTIONED PUMPS, AND MANUALLY OPERATED MEANS FOR CONTROLLING SAID TWO THROTTLED PASSAGES.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |