Tensioner for a power transmission belt

Details Tensioner for a power transmission belt Tensioner for a power transmission belt

1990-03-15

1991-06-25

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...

474110, F16H 712

Patent

active

050263307

ABSTRACT:
A tensioner is provided for a power transmission belt comprises a tensioning roller with which the belt cooperates, a return spring for controlling the displacement of said roller when the tension of the belt decreases and means for damping the vibrations likely to occur in the belt and comprising two variable volume chambers filled with a liquid and communicating together at one of their ends through a valve device through which the passage of the liquid entering and/or leaving said chambers introduces the damping effect, wherein the sidewall at least of one of the chambers is a membrane made from an elastomer material, such as rubber, having a general bell-shape and without spring, and the return spring associated with the other chamber is formed by a coil spring working under compression, prestressed in its rest state.

REFERENCES:
patent: 4728317 (1988-03-01), Martz et al.
patent: 4761155 (1988-08-01), Kinoshita et al.
patent: 4773892 (1988-09-01), Zarife et al.
patent: 4790801 (1988-12-01), Schmidt et al.
patent: 4798563 (1989-01-01), Okabe et al.
patent: 4911679 (1990-03-01), Inoue et al.

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