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. 07, 1997
Filed:
Dec. 28, 1994
Applicant:
Inventors:
Assignee:
Ebara Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417366 ; 41742314 ;
Abstract
A motor pump assembly incorporates a motor unit and a pump unit and has an outer surface to which a heating element such as a frequency converter is attached. The motor pump assembly comprises a motor having a main shaft, a pump casing encasing the motor and having an inner surface which contacts a fluid handled by the motor pump assembly, an impeller provided on the main shaft and housed in the pump casing, and a heating element which generates heat due to an electric loss and is attached to an outer surface of the pump casing.