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:
May. 24, 2016
Filed:
Apr. 17, 2012
Applicants:
Doug Goulet, Hanover, MN (US);
Jeff Hermes, Shoreview, MN (US);
Inventors:
Doug Goulet, Hanover, MN (US);
Jeff Hermes, Shoreview, MN (US);
Assignee:
Pentair Flow Technologies, LLC, Delavan, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/12 (2006.01); F04D 29/10 (2006.01); F04D 29/06 (2006.01);
U.S. Cl.
CPC ...
F04D 29/106 (2013.01); F04D 29/061 (2013.01); F04D 29/108 (2013.01); F04D 29/128 (2013.01);
Abstract
Some embodiments of the invention provide a pump including a pump chamber, a shaft at least partially positioned in the pump chamber, an impeller coupled to the shaft, and a seal coupled to the shaft. The pump also includes a wet seal chamber with a first fluid. The wet seal chamber can include a bladder that compresses to compensate for volumetric expansion of the first fluid. The wet seal chamber substantially prevents fluid from contacting the seal in order to prolong a life of the seal.