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:
Jan. 23, 2001
Filed:
Jan. 14, 1999
Applicant:
Inventor:
Masahiro Tsubokawa, Kusatsu, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/700 ;
U.S. Cl.
CPC ...
F04B 1/700 ;
Abstract
In an electric motor, a stator is formed with multiple slots axially on the inner circumference thereof. Provided inside of each slot are an outer slot insulation film and an inner insulation film each made of a material having a different dielectric constant from the other. The slot insulation films assure such an earth capacitance as not to adversely affect a refrigerant compressor while allowing the increase in efficiency of the electric motor.