Low profile tensioner with arcuate spring

Details Low profile tensioner with arcuate spring Low profile tensioner with arcuate spring

2011-08-23

2011-08-23

Mansen, Michael R (Department: 3654)

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...

C474S135000, C474S109000, C474S112000, C474S113000, C474S101000

Reexamination Certificate

active

08002657

ABSTRACT:
A tensioner operable to substantially maintain a specified tension in a flexible drive, such as a belt or chain, includes a spring, mounted laterally to the pivot shaft of the tensioner, which biases the tensioner arm towards the flexible drive. The spring is arcuate in shape and is maintained in a correspondingly arc-shaped spring retainer on a mounting plate of the tensioner. The arcuate shape of the spring and spring guide on the tensioner arm follows as the tensioner arm pivots towards and away from the flexible drive. The tensioner also has a wear take up mechanism to maintain the friction bushing in continuous engagement with the tensioner arm.

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