Belt tensioner, part therefor and methods of making the same

Details Belt tensioner, part therefor and methods of making the same Belt tensioner, part therefor and methods of making the same

1984-08-31

1986-07-22

Dorner, Kenneth J.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Guide roll mounted for movement of its axis along arcuate...

474133, 474110, F16H 712, F16H 708, F16H 722

Patent

active

046016830

ABSTRACT:
A tensioner for a power transmission belt that is adapted to be operated in an endless path, a part therefor and methods of making the same are provided, the tensioner comprising a support unit for being fixed relative to the belt, a belt engaging unit carried by the support unit and being movable relative thereto, a mechanical spring unit operatively associated with the support unit and the belt engaging unit for urging the belt engaging unit relative to the support unit and against the belt with a force to tension the belt, and a fluid dampening unit operatively associated with the support unit and the belt engaging unit to dampen the movement of the belt engaging unit relative to the support unit in at least one direction of movement thereof, the fluid dampening unit comprising a rotary dampening unit. The rotary dampening unit has a fluid therein and has at least one rotatable disc-like member disposed in the fluid, the disc-like member having a part for creating a shear in the fluid when the disc-like member moves in the fluid.

REFERENCES:
patent: 2032289 (1936-02-01), La Croix
patent: 3865216 (1975-02-01), Gryglas
patent: 4309174 (1982-01-01), Sproul
patent: 4392840 (1983-07-01), Radocaj

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