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:
Oct. 08, 2013
Filed:
Sep. 02, 2008
Applicants:
Daniel P. Ross, Maplewood, MN (US);
Paul R. Quam, Minneapolis, MN (US);
Inventors:
Daniel P. Ross, Maplewood, MN (US);
Paul R. Quam, Minneapolis, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A priming piston reciprocating pumphas piston guidewhich encircles pistonand is provided a bearing memberin the inner diameter of the upper end of the guide. The bearingis formed of 25% carbon-filled PTFE and may be fitted without tools into the aforementioned ID. Such a bearingallows a negligible clearance to be utilized between the bearingand the piston