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. 12, 2009
Filed:
Jun. 15, 2006
Aaron M. Hicks, Fridley, MN (US);
Aaron M. Hicks, Fridley, MN (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A rotary fluid pressure device () has a stationary valve member (), a rotatable valve member (), and a valve seating mechanism (). The valve seating mechanism () defines an outer balance ring member () having a valve-confronting surface () in engagement with an opposite surface () of the rotatable valve member () and an inner balance ring member () having a valve-confronting surface () in engagement with the opposite surface () of the rotatable valve member (), with the outer balance ring member () and the inner balance ring member () being structurally independent from the other. The outer balance ring member () and the inner balance ring member () define a balance ring passage () which provides continuous fluid communication between a fluid inlet () or a fluid outlet () and the valve passages () in the rotatable valve member ().