Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1983-02-18
1986-07-08
Look, Edward N.
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
F16D 3900
Patent
active
045985464
ABSTRACT:
A transmission device for mechanical power having continuously variable drive ratio and the capability for a wide ratio range is inherently simple in mechanical construction thru use of a rotary gear pump which hydraulically drives a rotary gear motor. Pump and motor are variable in displacement and a construction is taught which axially positions the pump and motor elements so their displacements are adjusted in opposite volumetric directions when effecting a drive ratio adjustment, thereby providing a wide range in possible drive ratios and still maintaining simplicity.
REFERENCES:
patent: 1603395 (1926-10-01), Mohl
patent: 1990750 (1935-02-01), Pigott
patent: 2052419 (1936-08-01), Moore et al.
patent: 2463950 (1949-03-01), Carroll
patent: 3224198 (1965-12-01), Schimkat
patent: 3383931 (1968-05-01), Patterson, Jr.
patent: 3740954 (1973-06-01), Young
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