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. 19, 1982
Filed:
Oct. 19, 1979
Applicant:
Inventors:
Kazumasa Fujioka, Ibaraki, JP;
Wataru Nakayama, Kashiwa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 55 ; 310 61 ;
Abstract
A rotor for hydrogen-cooled rotary electric machines is provided with a gas inlet chamber and a gas outlet chamber which are circumferentially defined by radially extending partition walls and disposed in a region between a retaining ring holding rotor windings in position and a rotor shaft. Rotor cooling gas is introduced through a gas inlet port to a gas inlet chamber to flow to a gas outlet chamber divided into a plurality of zones while cooling the rotor windings. Form the gas outlet chamber, the gas flows through axially extending passages to a plurality of fan-like ventilating means to be discharged outside of the rotor.