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

1981-09-11

1983-11-08

Dorner, Kenneth

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...

474136, 474110, F16H 712

Patent

active

044139829

ABSTRACT:
A tensioner for a power transmission belt that is adapted to be operated in an endless path is provided and comprises 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 thereof. The mechanical spring unit comprises a pair of springs disposed in substantially parallel spaced relation with the fluid dampening unit having at least a part thereof disposed between the springs and in substantially parallel relation therewith, the fluid dampening unit comprising a rotary dampening unit.

REFERENCES:
patent: 257098 (1882-04-01), Snyder
patent: 1308570 (1919-07-01), Zanes
patent: 3802286 (1974-04-01), Winklhofer et al.
patent: 4342135 (1982-08-01), Matsuo et al.
Patent Application, Ser. No. 296,694, filed Aug. 27, 1981, (Dayco Corporation) of Leslie B. Wilson.
Patent Application, Ser. No. 296,697, filed Aug. 27, 1981, (Dayco Corporation) of Randy C. Foster et al.
Admitted prior art of friction surface dampening of belt tensioners.
Admitted prior art of rotary torque converters and fluid couplings.

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