US3583512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Poclain SA
•
Filing: 1969-04-18
•
Granted: 1971-06-08
•
Expires: 1989-04-18
Abstract
Abstract An hydraulic power transmission for overcoming the problems involved in utilizing one set of power equipment for propelling a vehicle, such as is used in the building, civil engineering or material-handling industries, and for operating an hydraulic shovel or like actuator, and in particular overcoming the problems arising due to the differential effect of the wheels on opposite sides of the vehicles running a different speeds, and comprising two hydraulic pumps and two sets of wheels, each wheel having a hydraulic motor each set comprising a front wheel and a back wheel, the hydraulic motors of the wheels of any one set being supplied in parallel by one of the pumps, wherein at least two wheels of each set are disposed on two opposite sides of the vehicle.
Inventors
- 👤 Pierre A Praddaude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; B62; B62D; B62D11/00; B62D11/02; B62D11/06; B62D11/10; B62D11/14; B62D11/18; B62D11/183; E; E02; E02F; E02F9/00; E02F9/20; E02F9/22; E02F9/2253; F; F16; F16H; F16H39/00; F16H39/02; F16H61/00; F16H61/38; F16H61/40; F16H61/4078; F16H61/4157; F16H61/44; F16H61/444; F16H61/452; F16H61/456; F16H61/46; F16H61/47; G; G06; G06F; G06F11/00; G06F11/30; G06F11/34; B60K17/34; B60K17/356
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
207 words
A drive system for a vehicle having first and second sets of wheels, each set of wheels including a front wheel disposed on one side of said vehicle and a rear wheel disposed on the opposite of said vehicle, comprising a fluid drive motor operatively connected to each of said wheels, first and second fluid pressure sources, a first fluid supply means operatively interconnecting said first fluid pressure source and the fluid drive motors of said first set of wheels, a second fluid supply means operatively interconnecting said second fluid pressure source and the fluid drive motors of said second set of wheels, and means operatively connected to said fluid supply means for selectively communicating said first fluid pressure source with the fluid drive motors of said first set of wheels while simultaneously communicating said second fluid pressure source with the fluid drive motors of said second set of wheels, communicating said first and second fluid pressure sources to the fluid drive motors of said first and second sets of wheels, and communicating said first fluid pressure source exclusively with the fluid drive motors of said first and second sets of wheels whereby said second fluid pressure source would be available to operate a fluid operated tool.
Claim 2
Dependent Claim
207 words
A drive system for a vehicle having first and second sets of wheels, each set of wheels including a front wheel disposed on one side of said vehicle and a rear wheel disposed on the opposite of said vehicle, comprising a fluid drive motor operatively connected to each of said wheels, first and second fluid pressure sources, a first fluid supply means operatively interconnecting said first fluid pressure source and the fluid drive motors of said first set of wheels, a second fluid supply means operatively interconnecting said second fluid pressure source and the fluid drive motors of said second set of wheels, and means operatively connected to said fluid supply means for selectively communicating said first fluid pressure source with the fluid drive motors of said first set of wheels while simultaneously communicating said second fluid pressure source with the fluid drive motors of said second set of wheels, communicating said first and second fluid pressure sources to the fluid drive motors of said first and second sets of wheels, and communicating said first fluid pressure source exclusively with the fluid drive motors of said first and second sets of wheels whereby said second fluid pressure source would be available to operate a fluid operated tool.
Claim 3
Dependent Claim
38 words
A drive system for a vehicle according to claim 1 wherein each of said fluid supply means includes means for selectively preventing the supply of flUid under pressure to one of said fluid drive motors operatively connected thereto.
Claim 4
Dependent Claim
44 words
A drive system for a vehicle according to claim 2 wherein said means for selectively preventing the supply of fluid under pressure is operable to prevent the supply of fluid under pressure to both of the fluid motors connected to the fluid supply means.
Claim 5
Dependent Claim
25 words
A drive system for a vehicle according to claim 1 including gear reduction means operatively interconnecting each of said fluid drive motors and a wheel.
Claim 6
Dependent Claim
173 words
A drive system for a vehicle according to claim 1 wherein said means for selectively communicating said fluid pressure sources with said fluid motors includes a first valve disposed in said first fluid means for selectively supplying fluid under pressure to the fluid drive motors of said first set of wheels in opposite directions to produce forward and reverse drive, a second valve disposed in said second fluid supply for selectively supplying fluid under pressure from said second fluid pressure source to the fluid drive motors of said second set of wheels in opposite directions to produce forward and reverse drive, and a third valve disposed in said second fluid supply means between said second fluid pressure source and said second valve, and operatively connected to said first fluid supply means between said first fluid pressure source and said first valve, for selectively communicating said second fluid source with said second valve, said first and second fluid pressure source with said second valve, and said first fluid pressure source with said second valve.
Claim 7
Dependent Claim
38 words
A drive system for a vehicle according to claim 5 wherein each of said fluid supply means includes means for selectively preventing the supply of fluid under pressure to one of said fluid drive motors operatively connected thereto.
Claim 8
Dependent Claim
45 words
A drive system for a vehicle according to claim 6 wherein said means for selectively preventing the supply of fluid under pressure is operable to prevent the supply of fluid under pressure to both of the fluid drive motors connected to said fluid supply means.
Claim 9
Dependent Claim
24 words
A drive system for a vehicle according to claim 5 including gear reduction means operatively interconnecting each of said fluid motors and a wheel.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |