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:
Apr. 11, 1989
Filed:
Nov. 17, 1986
Applicant:
Inventors:
Shotaro Mizobuchi, Kanagawa, JP;
Toshiya Kanamori, Kanagawa, JP;
Katsumi Sasaki, Kanagawa, JP;
Katsutoshi Chiba, Kanagawa, JP;
Yoshikazu Kimura, Kanagawa, JP;
Assignee:
Ebara Research Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 90 ; 310268 ;
Abstract
An electrically powered apparatus is disclosed in which an axial end surface of a rotor and an axis end surface of a stator are arranged to be sliding surfaces for effecting relative sliding motion therebetween, one of the sliding surfaces being provided with grooves adapted to generate fluid dynamic pressure upon relative rotation of said surfaces.