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:
Apr. 04, 2017
Filed:
May. 19, 2011
Applicants:
Daniel W. Celotta, Circle Pines, MN (US);
John C. Holman, Ham Lake, MN (US);
Inventors:
Daniel W. Celotta, Circle Pines, MN (US);
John C. Holman, Ham Lake, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F04B 9/04 (2006.01); F04B 53/16 (2006.01); F04B 1/04 (2006.01);
U.S. Cl.
CPC ...
F04B 9/042 (2013.01); F04B 1/0408 (2013.01); F04B 1/0413 (2013.01); F04B 9/045 (2013.01); F04B 53/16 (2013.01); F04B 53/162 (2013.01);
Abstract
A pump assembly comprises a cam and a piston. The cam rotates in a plane about an eccentric axis, and has a circumferential side wall. The piston engages the circumferential side wall of the cam, and runs along a piston axis which lies in the plane of the cam. The piston axis is parallel to but not coincident with a reference line perpendicular to and intersecting the eccentric axis.