Multi-speed temperature responsive fan clutch
AssigneeWallace Murray Corporation
InventorJames W. Crooks
Life of this patent
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Abstract
A multi-speed temperature responsive fan clutch having a planetary gear unit disposed between the drive pulley and an output shaft with there being a low speed clutch and a high speed clutch, both actuated by a temperature responsive device. There is also a speed responsive clutch locking the output shaft to the pulley at low speeds.
Claims20
A multi-speed temperature responsive fan drive including a dead shaft, a rotating drive unit mounted on said dead shaft for rotation, an output shaft mounted on said dead shaft for selective rotation with and relative to said drive unit, a planetary gear unit for selectively coupling said output shaft to said drive unit;
- said planetary gear unit including a ring gear coupled to said drive unit for rotation therewith, a sun gear rotatably journalled on said dead shaft, and a planetary unit including a carrier fixedly secured to said output shaft;
- and temperature responsive control means for selectively locking components of said planetary gear unit to selectively vary said rotational speed of said output shaft relative to said drive unit.
Dependencies are inferred from the claim text.