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:
Jan. 16, 2024
Filed:
May. 14, 2021
Applicant:
Graco Minnesota Inc., Minneapolis, MN (US);
Inventors:
Jacob D. Higgins, White Bear Township, MN (US);
Benjamin J. Paar, Minneapolis, MN (US);
Brian W. Koehn, Minneapolis, MN (US);
Bradley H. Hines, Andover, MN (US);
Paul W. Scheierl, Chisago City, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 45/04 (2006.01);
U.S. Cl.
CPC ...
F04B 45/04 (2013.01);
Abstract
A displacement pump has multiple gas compression stages and serial gas flow through the compression stages. The gas is initially compressed in a first compression stage by a first fluid displacement member. The gas from the first compression stage flows to a second compression stage. The gas in the second compression stage is compressed by a second fluid displacement member and output from the pump.