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. 23, 2007
Filed:
Jul. 11, 2003
Steven J. Zumbusch, Chanhassen, MN (US);
Steven J. Zumbusch, Chanhassen, MN (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A tandem pump assembly of the type including a housing (H), disposed in which is a first pump (), driven by an input shaft (), and a second pump (), also driven by the input shaft (). The assembly is characterized by the tandem pump assembly including pressure override valve means () associated with only the first pump (), and operable, in response to a fluid pressure at a fluid outlet port () in excess of a pressure override setting (), to communicate pressurized fluid to a first fluid pressure responsive means (), in a manner tending to decrease the displacement of the first pump () without effecting the displacement of the second pump (), until said fluid pressure is substantially equal to the pressure override selling (), even if it is necessary for the first pump () to go over-center from its initial displacement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile