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:
Mar. 17, 2020
Filed:
Dec. 20, 2016
Applicant:
Graco Minnesota Inc., Minneapolis, MN (US);
Inventor:
Andrew J. Klaphake, Minneapolis, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 25/00 (2006.01); F04B 49/22 (2006.01); F16K 15/04 (2006.01); F16K 25/04 (2006.01);
U.S. Cl.
CPC ...
F16K 25/005 (2013.01); F04B 49/22 (2013.01); F16K 15/04 (2013.01); F16K 25/04 (2013.01); F16C 2208/78 (2013.01);
Abstract
A check valve includes a ball and a seat. The seat includes a body and a hole extending through the body. The hole is smaller in diameter than the ball. The body of the seat is formed from ultra-high-molecular-weight polyethylene. The ultra-high-molecular-weight polyethylene of the seat has an ASTM D648 heat deflection temperature of 46.7° C. at 1.8 MPa.