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
1991-09-12
1992-12-01
Lorence, Richard
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...
60490, 91497, 92 121, F16D 3900
Patent
active
051675889
ABSTRACT:
A drive comprising a first group of cylinders of a radial hydraulic pump, rotating in relation to the drive frame about a first axis, and torsionally integral with the input shaft of the drive and with a housing inside which the first group of cylinders rotates; a second group of cylinders of a radial hydraulic motor, rotating in relation to the frame about a second axis; an output shaft, the axis of which is located between the aforementioned axes, and which is integral with a gear meshing with a gear integral with the housing in which the first group of cylinders rotates, and with another gear integral with the second group of cylinders; a mechanism for varying displacement of the first and second group of cylinders; and a distributing mechanism for alternately connecting the cylinders in the first group with those of the second group.
REFERENCES:
patent: 3084562 (1963-04-01), Fitzpatrick
patent: 3107622 (1963-10-01), Soden
patent: 3408948 (1968-11-01), Boyd
patent: 4747269 (1988-05-01), David
patent: 4914914 (1990-04-01), Inoue
Cassese Ferdinando
Martinelli Paolo
Ferrari Engineering S.p.A.
Lorence Richard
Trousdell William O.
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