Sliding pulley drive mechanism in cutting platform of lawn mower
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United States of America Patent
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-
Aug 24, 2010
Grant Date -
Dec 17, 2009
app pub date -
Jun 11, 2009
filing date -
Jun 11, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A sliding pulley drive mechanism in cutting platform of lawn mower is disclosed. The drive mechanism includes an engine for the fixed to a chassis; a cutting platform connected to, and capable of moving up and down in relation to the chassis; cutting platform drive belts fitted over the output shaft of the engine, an external spline shaft is fixed to the output shaft of the engine, and a belt pulley with an internal spline is mounted on an external spline shaft. Through a spline mechanism, the belt pulley on the engine can slide up or down on the output shaft of the engine as the elevation of the cutting platform is adjusted, so that the cutting platform drive belts are kept in the same plane, and therefore the belt service lifespan is elongated.
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