Hydrostatic transmission

Details Hydrostatic transmission Hydrostatic transmission

1986-10-21

1988-04-26

Look, Edward K.

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

91497, F16H 3916, F16H 3946

Patent

active

047396180

ABSTRACT:
A hydraulic transmission has a pump and a hydraulic motor which are in communication with each other through a fluid passage and each of which has an eccentric or inclined movable member that is moved to vary the volume of liquid discharged by the pump or motor, the pump receiving an input rotation that is developed from the motor as an output rotation of a varied rotational frequency. The hydraulic transmission further includes a first element for urging the movable member of the pump in a first direction, a second element for urging the movable member of the motor in a second direction; and an actuating mechanism which moves the movable member of the pump a distance proportional to a control input, and which, when the displacement of the pump is varied, retains the movable member of the motor to keep the displacement of the motor constant, and which, when the movable member of the pump is retained at a certain position, moves the movable member of the motor a distance proportional to the control input.

REFERENCES:
patent: 3107490 (1963-10-01), Cooper et al.
patent: 3274947 (1966-09-01), Jonkers et al.
patent: 3643433 (1972-02-01), Widmaier
patent: 3765183 (1973-10-01), Baurle
patent: 4137826 (1979-02-01), Kita
patent: 4598546 (1986-07-01), Van Kanegan

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