Automatic power transmission belt tensioner

Details Automatic power transmission belt tensioner Automatic power transmission belt tensioner

1988-05-16

1989-05-02

Bui, Thuy M.

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

048264717

ABSTRACT:
An automatic power transmission belt tensioner having spring structure for providing a dual biasing of an idler roller against the power transmission belt. The biasing structure provides a dual biasing of the arm carrying the idler roller including a biasing under torsion and a biasing under compression of the spring structure. In one form, a pair of biasing springs is utilized, one for providing the torsion biasing and one for providing the compressional biasing. In another form, a single spring effects both of the dual biasing actions. The compressional biasing structure includes a pair of cams having cooperating inclined surfaces for effecting compression of the compression spring as a function of the movement of the idler roller arm.

REFERENCES:
patent: 4583962 (1986-04-01), Bytzek et al.

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