Patent ID: 7726126

Claim:
A hydraulic pump apparatus, comprising: a first pump assembly comprising a first end cap, a first pump housing mounted to the first end cap to form a first sump and a first axial piston pump disposed in the first sump; a second pump assembly comprising a second end cap, a second pump housing mounted to the second end cap to form a second sump, and a second axial piston pump disposed in the second sump, wherein the axes of rotation of the first and second axial piston pumps are collinear; a charge pump positioned directly between and engaging both the first and second end caps; a gearbox comprising a gearbox housing forming a third sump and a plurality of transmission gears rotatably disposed therein; an input shaft comprising a first end external to the gearbox housing and a second end; a first transmission gear fixed on and driven by the input shaft; and a power take off mechanism comprising a drive shaft extending into the gearbox to engage and be driven by a second transmission gear fixed on the drive shaft and an output shaft, wherein the drive shaft and output shaft extend in opposite directions from one another and are parallel to the input shaft.