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. 20, 2021
Filed:
Dec. 16, 2016
Applicant:
Graco Minnesota Inc., Minneapolis, MN (US);
Inventor:
Timothy S. Roman, Minnetonka, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 43/08 (2006.01); F04B 53/14 (2006.01); F16K 24/04 (2006.01); F16K 15/04 (2006.01); F04B 53/10 (2006.01); F04B 43/00 (2006.01); F04B 19/22 (2006.01); F16K 17/04 (2006.01); F04B 39/04 (2006.01);
U.S. Cl.
CPC ...
F04B 39/047 (2013.01); F04B 43/0081 (2013.01); F04B 43/084 (2013.01); F04B 53/1002 (2013.01); F04B 53/1005 (2013.01); F04B 19/22 (2013.01); F04B 53/143 (2013.01); F16K 15/044 (2013.01); F16K 17/0406 (2013.01); F16K 17/048 (2013.01);
Abstract
A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.