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. 12, 2026
Filed:
Sep. 18, 2023
Applicant:
Grundfos Holding A/s, Bjerringbro, DK;
Inventors:
Bjarne Dindler Rasmussen, Bjerringbro, DK;
Lars Sund Mortensen, Bjerringbro, DK;
Ole Bech-Lisberg, Bjerringbro, DK;
Mathias Skødt Larsen, Bjerringbro, DK;
Assignee:
Grundfos Holding A/S, Bjerringbro, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); F04B 13/00 (2006.01); F04B 49/20 (2006.01); F04B 53/06 (2006.01);
U.S. Cl.
CPC ...
F04D 27/004 (2013.01); F04B 13/00 (2013.01); F04B 49/20 (2013.01); F04B 53/06 (2013.01); F04B 2205/503 (2013.01);
Abstract
The invention relates in a first aspect to method of venting air out of a closed fluid system comprising a number of inter connected pipes configured for flow of a fluid, a variable speed pump configured for controlling the volume flow of fluid in said fluid system and an air venting device configured to let air out from the fluid system, the method comprising operating said pump in at least three phases.