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. 27, 2014
Filed:
Dec. 01, 2011
Daryl A. Wilton, Macomb, MI (US);
James M. Hart, Belleville, MI (US);
John C. Schultz, Saline, MI (US);
David R. Staley, Flushing, MI (US);
Daryl A. Wilton, Macomb, MI (US);
James M. Hart, Belleville, MI (US);
John C. Schultz, Saline, MI (US);
David R. Staley, Flushing, MI (US);
GM Global Technology Operations, LLC, Detroit, MI (US);
Abstract
A reversible gerotor pump for a machine having a drive shaft is provided, the pump including a housing, an offset ring, and an inner and outer gear. The offset ring is disposed in the housing and includes a tab extending radially from an outer periphery. The outer periphery of the offset ring defines a first axis in common with the axis of a drive shaft. The inner periphery of the offset ring defines a second axis that is slightly offset from the second axis. The axis of the outer gear moves relative to the axis of the inner gear to allow pumping action in both rotational directions using the same suction and line cavities for both directions.