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:
May. 04, 1993
Filed:
Sep. 03, 1991
James B Sheets, Ames, IA (US);
Sauer, Inc., Ames, IA (US);
Abstract
A variable displacement hydraulic motor has a motor housing with a fluid inlet and a fluid outlet. A pair of hydraulic displacement units are mounted in the housing in a parallel arrangement and are operatively associated with a common output shaft. The common output shaft is supported for rotation within the housing and has a pair of spaced ends extending outside the housing, one of the ends driving a first axle shaft and the other end driving a second axle shaft. Each motor unit has a rotatable cylinder block with reciprocable pistons communicating with the fluid inlet and the fluid outlet and an angularly positionable swashplate for varying the stroke of the pistons. A minimum-maximum servo regulates the position of each swashplate independently to provide a wide range of output of the hydraulic motor.