Fluid transmission

Details Fluid transmission Fluid transmission

1974-12-20

1976-10-05

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60447, 60448, 60449, 60452, 91497, F16H 3946

Patent

active

039837009

ABSTRACT:
This disclosure relates to a fluid transmission for automatically varying the drive ratio in accordance with the load placed thereon and includes a pump unit and a motor unit and wherein the pump unit is of a variable displacement with the displacement thereof being automatically adjustable in accordance with the pressure of the fluid output thereof and the input speed of the pump unit. The pump unit is of the radial piston type and includes a race member engaged by the pistons for controlling the displacement thereof. The race member has a cylindrical race surface and is mounted for tilting movement wherein in a neutral position the pistons have zero displacement and wherein when the race member is tilted, the displacement of the pistons increases.

REFERENCES:
patent: 2161439 (1939-06-01), Thoma
patent: 2420806 (1947-05-01), Anderson
patent: 2703054 (1955-03-01), Heater
patent: 3054263 (1962-09-01), Budzich et al.
patent: 3093946 (1963-06-01), Pitt et al.
patent: 3107491 (1963-10-01), Kaup et al.
patent: 3186170 (1965-06-01), Gauthier et al.
patent: 3199297 (1965-08-01), Croswhite
patent: 3521449 (1970-07-01), Speggiorin
patent: 3796052 (1974-03-01), Freeman
patent: 3857326 (1974-12-01), Blandford

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