Automatic tension control mechanism for a drive belt

Details Automatic tension control mechanism for a drive belt Automatic tension control mechanism for a drive belt

1980-03-31

1981-11-17

Husar, C. J.

Endless belt power transmission systems or components

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

Tension adjuster or shifter driven by electrical or fluid motor

474138, F16H 712

Patent

active

043008909

ABSTRACT:
A belt tension controlling mechanism has a spring member which operates on a pulley support bracket to establish a tension in a belt trained on the pulley. The spring member surrounds a threaded sleeve which is rotated by a pair of selectively operable one-way ratcheting clutches which are simultaneously driven in opposite directions by a vacuum motor. The rotation of the sleeve results in linear meovement of a shaft connected to the pulley support bracket to thereby increase or decrease the belt tension, depending upon which clutch is operable.

REFERENCES:
patent: 3924483 (1975-12-01), Walker et al.
patent: 4249425 (1981-02-01), Watson

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