Infinitely variable cone pulley transmission

Details Infinitely variable cone pulley transmission Infinitely variable cone pulley transmission

1981-07-10

1984-03-27

Murtagh, John E.

Endless belt power transmission systems or components

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

Fluid pressure actuator for adjustment of member

474 18, F16H 1104

Patent

active

044391706

ABSTRACT:
An infinitely variable cone pulley transmission has a first and a second pulley mounted on driving and driven shafts and connected by an endless belt. Each pulley is formed of first and second pulley discs. A hydraulic device sets and maintains each first pulley by hydraulic pressure in an axial position corresponding to a desired transmission ratio between the driving and the driven shafts. A torque sensor is mounted adjacent a second pulley disc for receiving a torque. The torque sensor has a pressing device mounted for axial displacement as a function of the torque and a valve arranged for displacement by the pressing device for varying the hydraulic pressure on the first pulley discs. The pressing device has a first ring torque-transmittingly and axially immovably mounted in the vicinity of the second pulley disc, a second ring relatively rotatably and axially slidably mounted between the second pulley disc and the first ring and forming a movable part of the valve. A torque transmitting device transmits torque from one ring to the other. The torque transmitting device comprises a cooperating camming arrangement carried by the two rings for axially displacing the second ring with respect to the first ring as a function of the torque applied to the second ring.

REFERENCES:
patent: 4094203 (1978-06-01), van Deursen et al.
patent: 4261213 (1981-04-01), Rattunde
patent: 4292031 (1981-09-01), Rattunde

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