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Hydrostatic transaxle

  • US 7,503,172 B2
  • Filed: 01/16/2007
  • Issued: 03/17/2009
  • Est. Priority Date: 01/16/2006
  • Status: Expired due to Fees
First Claim
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1. A hydrostatic transaxle for a vehicle having a first axle and a second axle, the hydrostatic transaxle comprising:

  • a hydraulic pump;

    a variable displacement first hydraulic motor drivingly connected to the first axle;

    a closed circuit fluidly connecting the hydraulic pump to the first hydraulic motor;

    a fluid-supply switching device shifted between a supply position for supplying fluid from the closed fluid circuit to a second hydraulic motor, which is disposed on the outside of the hydraulic transaxle and is drivingly connected to the second axle, and a supply-stop position for stopping the supply of fluid from the closed fluid circuit to the second hydraulic motor; and

    a means for associating the switching of the fluid-supply switching device between the supply position and the supply-stop position with an operation for changing the displacement of the first hydraulic motor.

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