Auto tensioner

Details Auto tensioner Auto tensioner

1995-03-23

1996-01-02

Buiz, Michael Powell

Endless belt power transmission systems or components

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

Pulley shifter

474135, F16H 708

Patent

active

054803586

ABSTRACT:
An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.

REFERENCES:
patent: 4973290 (1990-11-01), Hans et al.
patent: 4978326 (1990-12-01), Henderson
patent: 5254048 (1993-10-01), Gardner et al.
patent: 5277667 (1994-01-01), Gardner et al.

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