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. 15, 2020
Filed:
Apr. 03, 2018
Applicant:
Graco Minnesota Inc., Minneapolis, MN (US);
Inventors:
Jesse L. Lanie, Ihlen, MN (US);
Dustin A. Tichy, Otsego, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 53/18 (2006.01); F01M 1/02 (2006.01); F04B 53/14 (2006.01); F04B 23/02 (2006.01); F16N 19/00 (2006.01); F04B 53/06 (2006.01); F04B 9/123 (2006.01); F04B 53/16 (2006.01); F04B 39/02 (2006.01); F04B 17/04 (2006.01); F04B 9/125 (2006.01); F04B 9/12 (2006.01); F16N 29/02 (2006.01); F16N 13/06 (2006.01);
U.S. Cl.
CPC ...
F04B 53/18 (2013.01); F01M 1/02 (2013.01); F04B 9/123 (2013.01); F04B 9/125 (2013.01); F04B 9/1222 (2013.01); F04B 17/04 (2013.01); F04B 23/025 (2013.01); F04B 23/026 (2013.01); F04B 39/0284 (2013.01); F04B 53/06 (2013.01); F04B 53/143 (2013.01); F04B 53/16 (2013.01); F16N 13/06 (2013.01); F16N 19/00 (2013.01); F16N 29/02 (2013.01);
Abstract
A pump housing includes an integral vent flow path extending between a low-pressure region and the reservoir. The vent path provides fluid communication between the downstream side of a throat seal dividing the low-pressure region from a high-pressure region and the reservoir. Lubricant flows through the vent path from the reservoir to the low-pressure region to provide lubrication to the throat seal.