V-belt type stepless transmission

Details V-belt type stepless transmission V-belt type stepless transmission

1983-11-23

1985-09-17

Leppink, James A.

Endless belt power transmission systems or components

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

Load responsive

474 8, F16H 1106

Patent

active

045418209

ABSTRACT:
A V-belt type stepless transmission, comprising: an input pulley and an output pulley mounted on parallel input and output shafts, respectively, each pulley having a stationary flange and a movable flange axially displaceable relative to the stationary flange and rotatable integrally therewith; an endless V-belt lapped around the input and output pulleys to transmit power therebetween, a servo mechanism for the movable flange, including a drive member having a first screw or a second screw, the first screw formed on the movable flange or on a structure integrally connected to the movable flange, the second screw threadedly engaged with the first screw for axially displacing the movable flange by rotation of the second screw relative to the first screw, and a brake provided between the drive member and a transmission case for braking the drive member, and a torsion spring interposed between the movable flange and the drive member; and

REFERENCES:
patent: 2623410 (1952-12-01), Billey
patent: 3771377 (1973-11-01), Bush

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