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:
Mar. 31, 2009
Filed:
Oct. 01, 2007
Jeffrey M. Depayva, Dunlap, IL (US);
Daniel R. Puckett, Peoria, IL (US);
Gregory William Hefler, Chillicothe, IL (US);
Todd a Johnson, Metamora, IL (US);
Jeffrey M. DePayva, Dunlap, IL (US);
Daniel R. Puckett, Peoria, IL (US);
Gregory William Hefler, Chillicothe, IL (US);
Todd A Johnson, Metamora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A spacer for use with, and to prevent or reduce the occurrence of stiction in, a fluid device such as a pump. The spacer has a generally ring-shaped body, which has first and second facing surfaces separated by a thickness. The spacer is positioned between a movable member of the pump and a stationary member of the pump such that the first facing surface of the spacer is contactable with the movable member and the second facing surface is contactable with the stationary member. The spacer has at least a fluid receiving groove formed in at least one of the first and second facing surfaces.