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:
Dec. 16, 1980
Filed:
Nov. 17, 1978
Applicant:
Inventors:
Keiichi Harano, Sagamihara, JP;
Shigeaki Oyama, Hachioji, JP;
Assignee:
Fujitsu Fanuc Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 54 ; 310 52 ; 310 64 ; 165105 ;
Abstract
A rotary electric machine with a heat pipe for cooling, which pipe comprises a rotary shaft. The rotary shaft has a hole formed therein extending from a heating zone to a cooling zone and has working fluid charged therein. The inner diameter of the cooling zone is smaller than the diameter of the heating zone, and an inner wall of the cooling zone is connected to an inner wall of the heating zone via a step.