Patent ID: 8196506
Filing Date: 2012-06-12
Classification: F04B

Abstract:
1. An swash plate axial piston pump having condition responsive control of pump displacement, said pump comprising: a housing having a piston block disposed therein, said piston block defining a plurality of piston bores, a piston disposed and translational in each of said piston bores, a swash device defining a swash bore about a swash central axis and defining a swash rotation axis for rotation thereabout, a pivotal connection pivotally connecting each of said pistons to said swash device for rotation about a connection pivot point during relative movement between said swash device and said piston, said connection pivot points being aligned in a plane, a shaft supported by said housing and passing through said swash bore and defining a shaft central axis, a hinge assembly pivotally supporting said swash device about a hinge axis disposed on the opposite side of said plane from said piston block and movable radially relative to said shaft central axis during relative movement of said swash device along said shaft, and said swash rotation axis being offset from said plane away from said hinge axis and radially offset from said swash central axis toward said hinge axis.