Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid pump and motor in one of plural paths to or from...
Patent
1997-05-16
1998-11-03
Ta, Khoi Q.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid pump and motor in one of plural paths to or from...
475 81, F16H 4704
Patent
active
058300970
ABSTRACT:
A hydromechanical transmission receives split power inputs from a vehicle engine, one split input driving a hydrostatic power unit and the other split input driving a mechanical power input. The infinitely variable hydrostatic power output is combined in the mechanical power unit with multiple ratios of its split input power to achieve multiple ratios of hydromechanical output power for smoothly propelling a vehicle from rest through multiple transmission ranges to maximum speed, with synchronous shifting between ranges. The hydromechanical transmission is particularly applicable to off-road vehicles, such as agricultural tractors.
REFERENCES:
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patent: 4754664 (1988-07-01), Dick
patent: 5080637 (1992-01-01), Tenberge et al.
patent: 5466197 (1995-11-01), Mitsuya et al.
patent: 5616091 (1997-04-01), Warren
patent: 5730678 (1998-03-01), Larkin
General Dynamics Defense Systems, Inc.
Ta Khoi Q.
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