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:
Oct. 29, 2024
Filed:
Mar. 14, 2022
Applicant:
Graco Minnesota Inc., Minneapolis, MN (US);
Inventors:
Jason J. Willoughby, Minneapolis, MN (US);
David M. Behrens, Hopkins, MN (US);
Timothy S. Roman, Minnetonka, MN (US);
Assignee:
Graco Minnesota Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 43/06 (2006.01); F04B 43/00 (2006.01); F04B 43/073 (2006.01); F04B 45/04 (2006.01); F04B 45/053 (2006.01); F04B 53/06 (2006.01); F04B 53/10 (2006.01); F04B 45/047 (2006.01);
U.S. Cl.
CPC ...
F04B 43/06 (2013.01); F04B 43/0081 (2013.01); F04B 43/0736 (2013.01); F04B 45/043 (2013.01); F04B 45/0533 (2013.01); F04B 45/0536 (2013.01); F04B 53/06 (2013.01); F04B 53/1002 (2013.01); F04B 45/047 (2013.01);
Abstract
A positive displacement pump includes a housing surrounding a drive chamber and a diaphragm compartment. A drive element is inside the drive chamber. A diaphragm is inside the diaphragm compartment and divides the diaphragm compartment into a fluid chamber and a cavity. A shaft connects the drive element and the diaphragm. A breather valve is fluidically connected to the cavity and is configured to allow air to exit the cavity. The cavity is fluidically disconnected from the drive chamber.