Continuously variable hydrostatic transmission

Details Continuously variable hydrostatic transmission Continuously variable hydrostatic transmission

1994-11-03

1996-02-27

Look, Edward K.

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

60408, 60492, 92 122, 92 57, 92 71, F16D 3102, F16D 3900

Patent

active

054938627

ABSTRACT:
A continuously variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A wedge-shaped swashplate is pivotally mounted to the output shaft in driving connection to receive output torque resulting from the exchange of pressurized hydraulic fluid between the pump and motor units through specially configured ports in the swashplate. A hydraulically actuated ratio controller is pivotally linked to the swashplate to selectively adjust the swashplate angle relative to the output shaft axis and thereby change transmission ratio.

REFERENCES:
patent: 1407047 (1922-02-01), Trowbridge
patent: 2770099 (1956-11-01), Badalini
patent: 2788636 (1957-04-01), Badalini
patent: 3204411 (1965-09-01), Storkton
patent: 4574904 (1986-03-01), Goode
patent: 4710107 (1987-12-01), Kanies
patent: 4731997 (1988-03-01), Hagin
patent: 4815327 (1989-03-01), Drevet
patent: 5269142 (1993-12-01), Atake
patent: 5423183 (1995-06-01), Folsom

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