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:
Jun. 05, 1990
Filed:
Aug. 17, 1989
Applicant:
Inventors:
Niels D Jensen, Bjerringbro, DK;
Jorgen Christensen, Bjerringbro, DK;
Assignee:
Grundfos International a/s, Bierringbro, DK;
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F01D / ;
U.S. Cl.
CPC ...
417373 ; 4174233 ; 4174238 ; 415177 ;
Abstract
An immersion pump assembly comprises a pump and a wet-rotor motor driving the pump. The motor and the pump have a common shaft which is closable and hollow and which is partly filled with a fluid, for dispersal of waste heat from the rotor chamber of the motor into a heat sink provided by the liquid to be conveyed by means of the pump. The shaft together with the fluid constitutes a rotating heat pipe system.