Importance

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Abstract

A chain and sprocket transmission system for small all-terrain vehicles couples a high-speed, low-horsepower motor to a small diameter ground-engaging vehicle driving wheel. The chain and sprocket transmission system includes a small driving sprocket directly driven by the high-speed, low-horsepower motor. A large driven sprocket coaxially rotates with the small-diameter ground-engaging wheel. An endless chain has links for encircling in a loop the small driving sprocket and the large driven sprocket for powering the small-diameter ground-engaging wheel. A chain keeper pivots over the small driving sprocket. This chain keeper has a chain-contacting tongue elastically biased with respect to the keeper toward the inside of the chain loop. The chain-contacting tongue contacts and tensions the chain at the idle chain linkage between the small driving sprocket and the large driven sprocket.

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First Claim