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:
May. 15, 1984
Filed:
Oct. 29, 1982
Applicant:
Inventors:
Kiyoshi Yamaguchi, Hitachi, JP;
Naoki Maki, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ;
U.S. Cl.
CPC ...
62505 ; 62 55 ; 310 54 ; 310 64 ;
Abstract
A coolant supply and discharge device for a superconductive rotor including a gaseous coolant withdrawing tube for withdrawing a gaseous coolant located at an end portion of fixed casing enclosing an end portion of the rotor and supporting a coolant feed tube. The withdrawing tube is constituted to withdraw a predetermined amount of gaseous coolant produced in a clearance between the coolant feed tube and a coolant inlet tube located within a rotor shaft to a coolant sump located outside, to avoid introduction of heat into the feed tube from outside.