Patent ID: 7588103

Claim:
A hydrostatic transaxle, comprising: a transaxle casing; a pair of left and right axles disposed in the transaxle casing; a pair of hydraulic motors for differentially driving the respective axles, wherein the hydraulic motors are disposed in the transaxle casing so as to be fluidly connected to a common hydraulic pressure source in parallel to each other, and wherein one of the hydraulic motors is a fixed displacement hydraulic motor, and the other is a variable displacement hydraulic motor; a pair of left and right steerable drive wheels disposed on left and right outsides of the transaxle casing so as to be drivingly connected to the respective axles; and a displacement control section for controlling the displacement of the variable displacement hydraulic motor, the displacement control section including a cam member mounted on the transaxle casing, the cam member being rotatable in opposite directions according to change of steered angles of the drive wheels, so that in which direction the cam member rotates depends on whether the steered direction of the drive wheels is leftward or rightward, and a rotary member contacting the cam member to be rotated according to the rotation of the cam member, wherein the displacement of the variable displacement hydraulic motor is changed according to the rotation of the rotary member, and wherein the rotary member rotates in one direction regardless of in which direction the cam member rotates.