Steplessly adjustable belt-type transmission

Details Steplessly adjustable belt-type transmission Steplessly adjustable belt-type transmission

1986-11-21

1988-04-19

Novosad, Stephen J.

Endless belt power transmission systems or components

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

Load responsive

474 33, F16H 1106

Patent

active

047386517

ABSTRACT:
An infinitely variable belt-type transmission for an agricultural machine or the like includes drive and driven pulleys and a pair of inversely variable diameter pulleys mounted on a shaft that is shiftable to vary the diameter of the pulleys and consequently the drive ratio of the transmission. The inner halves of the adjacent variable diameter pulleys are drivingly connected through a cam that exerts a force on the inner pulley halves tending to increase the pulley diameters and thereby increase the belt tension in response to an increase in torque transmitted through the transmission, and the shiftable pulley half on at least one of the pulleys is splined to its mating half so that the shifting movement in response to the torque increase results only in axial motion of the shiftable pulley half.

REFERENCES:
patent: 3628390 (1969-12-01), van der Lely et al.
patent: 3881370 (1975-05-01), Vogelaar et al.
patent: 4400930 (1983-08-01), Huhman et al.

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