Patent ID: 6772591
Filing Date: 2004-08-10
Classification: F04B,F16D,F16H

Abstract:
A pump unit used for a vehicle with first and second hydraulic motors respectively connected to the right and left drive wheels comprising:a first hydraulic pump and a second hydraulic pump, both being a variable displacement type located parallel to one another within a common housing, and respectively operable in association with said first and second hydraulic motors which are disposed away from said common housing; said first hydraulic pump and said second hydraulic pump respectively including a first pump shaft and a second pump shaft located parallel to one another within said common housing and operatively connected to one another via a power transmission mechanism and a first control shaft and a second control shaft designed for controlling the input/output flow rates of said first and second hydraulic pumps; said first control shaft and said second control shaft respectively extending away from one another along a vehicle width direction; said common housing defining an opening for receiving at least one of said first and second hydraulic pumps; and said opening of the common housing being sealed by a center section.