Patent ID: 7987669

Claim:
A fluid passage member comprising: a pump mounting surface onto which a hydraulic pump having a rotary axis is mounted; first and second kidney ports opened at the pump mounting surface; a first fluid extraction port outwardly opened and connected to the first kidney port; a motor mounting surface onto which a hydraulic motor having a rotary axis is mounted such that the rotary axis of the hydraulic motor is parallel to the rotary axis of the hydraulic pump; third and fourth kidney ports opened at the motor mounting surface; a second fluid extraction port outwardly opened and connected to the third kidney port; and a fluid passage interposed between the second and fourth kidney ports, the fluid passage extending from the second kidney port to the fourth kidney port so as to fluidly connect the second and fourth kidney ports together, wherein the first kidney port and the first fluid extraction port are separated from the third kidney port and the second fluid extraction port, wherein the first and second fluid extraction ports are adapted to be fluidly connected via piping to a second hydraulic motor which is not mounted on the motor mounting surface of the fluid passage member, wherein a pair of fluid lines extend between the hydraulic pump mounted on the pump mounting surface and the hydraulic motor mounted on the motor mounting surface, wherein the second and fourth kidney ports and the fluid passage in the fluid passage member serve as an entirety of one of the fluid lines, wherein the first and third kidney ports and the first and second extraction ports in the fluid passage member serve as a part of the other of the fluid lines, and wherein the other of the fluid lines is completed with the piping and the second hydraulic motor.