Torque transmission device for variable speed control

Details Torque transmission device for variable speed control Torque transmission device for variable speed control

1989-12-22

1991-12-10

Look, Edward K.

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

60488, 60489, 91504, 91505, 417222R, 417269, F16D 3900

Patent

active

050706969

ABSTRACT:
A torque transmission apparatus has a hydraulic assembly with a variable speed control, and comprises first and second rotors at a power side of the transmission apparatus, the rotors being coaxially rotatable with respect to each other. The first rotor has a swash plate facing the second rotor. The second rotor has a plurality of cylindrical bores which have open ends facing the swash plate and other ends which are communicated with through bores arranged in communication with ports. Plunger members are provided for sliding in the cylindrical bores, the plunger members being guided by the swash plate. A control rotor and a stator are provided at a control side of the transmission apparatus. The stator has a swash plate, and the control rotor has cylindrical bores having open ends facing the swash plate of the stator and communicating with through bores in the stator. Plungers are provided which slide in the cylindrical bores of the control rotor, guided by the variable swash plate of the stator. The inclination of the variable swash plate of the stator is controlled. A liquid supply device, including one-way valves coupled to respective passages which communicate the ports of the first rotor with ports of the stator, is provided for supplying liquid at a prescribed back-up pressure to the ports.

REFERENCES:
patent: 3054263 (1962-09-01), Bubzich
patent: 3788078 (1974-01-01), Rubenstein
patent: 4646520 (1987-03-01), Furumoto et al.
patent: 4781022 (1988-11-01), Hayashi et al.
patent: 4838024 (1989-06-01), Yamamoto et al.
patent: 4845951 (1989-07-01), Hayashi et al.
patent: 4854125 (1989-08-01), Inoue
patent: 4860540 (1989-08-01), Hayashi et al.
patent: 4938024 (1990-07-01), Matsuto et al.

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