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

1986-03-20

1987-01-06

Leppink, James A.

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...

F16H 712

Patent

active

046344080

ABSTRACT:
A tensioner for a power transmission belt that is adapted to be operated in an endless path and a method 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 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 and the support unit comprising a shaft. The rotary dampening unit and the spring unit are coaxially spaced apart and coaxially aligned on the shaft with the belt engaging unit having a portion thereof disposed between the rotary dampening unit and the spring unit and being rotatably carried by the shaft.

REFERENCES:
patent: 403048 (1889-05-01), Jones
patent: 447301 (1891-03-01), Dootoor
patent: 4285676 (1981-08-01), Kraft
patent: 4413982 (1983-11-01), Foster
patent: 4425103 (1984-01-01), Foster

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