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:
Sep. 11, 2018
Filed:
Mar. 17, 2017
Graco Minnesota Inc., Minneapolis, MN (US);
Bradley H. Hines, Andover, MN (US);
Brian W. Koehn, Minneapolis, MN (US);
Jeffrey A. Earles, Lakeville, MN (US);
Paul W. Scheierl, Circle Pines, MN (US);
Adam K. Collins, Brooklyn Park, MN (US);
Graco Minnesota, Inc., Minneapolis, MN (US);
Abstract
A method of displacing fluid includes pulling a pump displacement member through a suction stroke with a pull, the pull configured to transmit only tensile forces to the fluid displacement member. A working fluid disposed in an internal pressure chamber drive the fluid displacement member through a pumping stroke. The pull is prevented from transmitting any compressive forces to the fluid displacement member, such that the pull does not drive the fluid displacement member through the pumping stroke.