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:
Feb. 01, 1983
Filed:
Feb. 10, 1981
Toshinari Ando, Tokaimura, JP;
Masataka Nishi, Tokaimura, JP;
Susumu Shimamoto, Tokaimura, JP;
Hiromichi Yoshida, Hitachi, JP;
Takashi Suzumura, Hitachi, JP;
Kimio Kakizaki, Hitachi, JP;
Ryozo Yamagishi, Hitachi, JP;
Hisanao Ogata, Shimoinayoshi, JP;
Japan Atomic Energy Research Institute, Tokyo, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A novel composite superconductor includes a superconducting material and a normal conducting material. The composite superconductor has a number of closely spaced grooves on a surface being in contact with a refrigerant, and a number of ridges spaced apart from each other by the grooves and having acutely tapered ends. The surfaces of the grooves and the ridges are coated with a thin film of metal or its compound having higher heat resistance than that of the surface of the composite superconductor. Consequently, a high critical heat flux in film boiling and a high cooling capability can be provided, thereby making it possible to decrease the sectional area of the normal conducting material, to increase the effective current density and to miniaturize the size of a magnet.