Tensioner with two way damper

Details Tensioner with two way damper Tensioner with two way damper

2007-08-30

2011-11-08

Dondero, William E (Department: 3654)

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Tension adjuster has surface in sliding contact with belt

C474S109000

Reexamination Certificate

active

08052559

ABSTRACT:
A tensioner for a power transmission system includes two tensioning arms operatively engaged with the strand of the chain or the belt of the power transmission system. The upper end of each tensioning arm is connected to a two way damper which is pivotally mounted between the upper ends of the tensioning arms. When a pre-determined chain tension overload threshold is reached, the amount of torque required to overcome the coefficient of friction the damper allows the tensioner to adjust the tension in the chain with minimal oscillations and minimal phase change variation.

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PCT Search Report; PCT/US2007/077214; Feb. 12, 2008, 12 pages.
European Search Report for EP07841609; date Feb. 24, 2010; 7 pages.

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