Belt tensioner and method of making the same

Details Belt tensioner and method of making the same Belt tensioner and method of making the same

1984-02-21

1985-08-20

Novosad, Stephen 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...

474139, F16H 708

Patent

active

045361720

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 mechanical spring unit operatively associated with a support unit and a belt engaging unit for urging the belt engaging unit relative to the support unit and against a 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 and being coaxially aligned with the spring unit. The rotary dampening unit comprises an outer ring member and an inner ring member disposed in the outer ring member with the members being arranged for relative rotational movement therebetween, the outer ring member being operatively interconnected to the support unit and the inner ring member being operatively interconnected to the belt engaging unit. The support unit comprises a cup-shaped housing containing the spring unit therein and having a closed end and an open end, the housing being operatively interconnected to the outer ring member. Part of the open end of the housing extends over the outer ring member and is secured thereto.

REFERENCES:
patent: 2790520 (1957-04-01), Kuhn, Jr.
patent: 4270906 (1981-06-01), Kraft et al.
patent: 4464147 (1984-08-01), Foster
patent: 4472162 (1984-09-01), Hitchcock
patent: 4473362 (1984-09-01), Thomey et al.

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