The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1984
Filed:
Sep. 28, 1981
J D Livesay, Tipp City, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A variable displacement axial piston machine is disclosed having a piston guide cylinder stationarily aligned with an axial working piston cylinder. A single-headed piston has a piston head at one end reciprocally mounted in the working cylinder and a piston guide at the opposite end reciprocally mounted and guided in the guide cylinder to maintain axial alignment (prevent tilting) of the piston head in its cylinder during piston reciprocation. A shaft is supported for rotation about an axis extending longitudinally of and radially spaced from the piston and its cylinders and a rotary swash plate with flat parallel sides is fixedly drivingly and pivotally interconnected with the shaft so that the swash plate rotates with the shaft while being pivotal about a pivot axis transverse to the shaft axis. The piston is slidably drivingly and pivotally interconnected with the sides of the swash plate so that the piston reciprocates on rotation of the shaft and vice versa and wherein the piston stroke and thereby displacement is made to vary by pivoting the swash plate to various angles relative to the shaft. Moreover, there is provided axial compensation in the drive arrangement between the piston and swash plate for maintaining continuous sliding drive engagement therebetween to compensate for the change in effective axial thickness between the swash plate sides relative to the piston when the angle of the swash plate is changed.