Patent ID: 7690470

Claim:
A hydrostatic transaxle comprising: a motor casing; at least one hydraulic motor disposed in the motor casing; at least one output shaft disposed in the motor casing so as to be driven by the at least one hydraulic motor; a pair of steerable wheel support units attached onto respective opposite ends of the motor casing, each of the steerable wheel support units including: an axle drivingly connected to the at least one output shaft; a steerable casing supporting the axle, the steerable casing being substantially horizontally rotatable relative to the motor casing; a wheel attached on an outer end of the axle outside of the steerable casing; and a steering arm rotatably integrally provided on the steerable casing; a pair of rods disposed on one side of the motor casing and extended from the respective steering arms; a common rotary member of a steering operation mechanism for turning the pair of steerable wheel support units, wherein the pair of rods are connected to the rotary member so as to be arranged in a V-shape and wherein the motor casing, the pair of rods, and the rotary member form a space; and a port block for fluidly connecting the hydraulic motor to an external hydraulic pressure fluid source, wherein the port block is provided in the space on the one side of the motor casing.