Hydrostatic two-way-variable-speed drive

Details Hydrostatic two-way-variable-speed drive Hydrostatic two-way-variable-speed drive

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

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