Patent ID: 6843056

Claim:
An axle driving apparatus comprising: a transmission housing comprising a main housing element and a cover element; a hydrostatic transmission mounted in the housing and comprising a first hydraulic pump driven by a first input shaft, a first hydraulic motor operatively connected to the fist pump through a first hydraulic circuit, a second hydraulic pump driven by a second input shaft, and a second hydraulic motor operatively connected to the second hydraulic pump through a second hydraulic circuit; a first axle housing mounted on one end of the transmission housing, and a first output axle mounted in the first axle housing and connected to the first hydraulic motor; a second axle housing mounted on the opposite end of the transmission housing, and a second output axle mounted in the second axle housing and connected to the second hydraulic motor; a charge pump engaged to at least one of the hydraulic circuits; and charge pump fluid passages formed in the transmission cover element and connected to the charge pump and to both the ft and second axle housings.