Continuously variable transmission with hydraulically adjustable

Details Continuously variable transmission with hydraulically adjustable Continuously variable transmission with hydraulically adjustable

1990-11-21

1993-04-13

Luebke, Renee S.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Load responsive

474 28, F16H 5552

Patent

active

052016870

ABSTRACT:
A continuously variable belt or chain transmission wherein the input shaft carries a first adjustable sheave and the output shaft carries a second adjustable sheave. The axially movable flanges of the sheaves are displaceable toward the associated fixedly mounted flanges by hydraulic cylinder and piston units. The pressure of fluid in such units is regulated by a torque sensor which is a hydrostatic pump installed between a prime mover and the input shaft and further serves as a means for eliminating peaks of transmitted torque and/or as a clutch. A second pump is provided to supply pressurized fluid to one or more additional cylinder and piston units which are used to change the ratio of the transmission. The cylinder and piston unit for the axially movable flange of the sheave on the output shaft can contain a diaphragm spring serving to permanently bias the respective movable flange against an endless belt or chain which is trained over the sheaves.

REFERENCES:
patent: 4173156 (1979-11-01), Horowitz
patent: 4228691 (1980-10-01), Smirl
patent: 4433594 (1984-02-01), Smirl
patent: 4494943 (1985-01-01), Takei
patent: 4569670 (1986-02-01), McIntosh
patent: 4583423 (1986-04-01), Hahne
patent: 4674359 (1987-01-01), Hattori
patent: 4767384 (1988-08-01), Moan
patent: 5009127 (1991-04-01), Morimoto

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