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Variable pulley transmission

  • US 4,433,594 A
  • Filed: 04/24/1981
  • Issued: 02/28/1984
  • Est. Priority Date: 04/24/1981
  • Status: Expired due to Term
First Claim
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1. A transmission mechanism comprising an input shaft, a continuously variable drive system having an input pulley, an output pulley, and a belt means extending between said pulleys to transfer power, each of said input and output pulleys having an axially fixed sheave and an axially movable sheave, means connecting said fixed sheave of the input pulley to said input shaft, a second shaft, means connecting said fixed sheave of the output pulley to said second shaft, a slippable, fluid-actuated, fluid cooled, starting clutch mounted on said second shaft, a sleeve concentric with, and rotatable with respect to, said second shaft, said sleeve being connected to said clutch, a third shaft, means for providing a driving connection between said second and third shafts including a forward-reverse gear selection means having a forward driving gear and a reverse driving gear connected to said sleeve, and final drive means drivingly connected to said third shaft, said starting clutch, when engaged, connecting the second shaft to said forward-reverse gear selection means, whereby said belt can continuously rotate said pulleys.

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