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:
Nov. 27, 2007
Filed:
Sep. 05, 2006
Michiharu Ichikawa, Kanagawa, JP;
Hiroshi Suzuki, Kanagawa, JP;
Toshihiro Takahashi, Kanagawa, JP;
Shinichi Mukoyama, Tokyo, JP;
Masashi Yagi, Tokyo, JP;
Michiharu Ichikawa, Kanagawa, JP;
Hiroshi Suzuki, Kanagawa, JP;
Toshihiro Takahashi, Kanagawa, JP;
Shinichi Mukoyama, Tokyo, JP;
Masashi Yagi, Tokyo, JP;
Central Research Institute of Electric Power Industry, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
When supplying electric power to a superconducting cable including a superconducting shield covering a superconductive conductor, a phase A of a current generated by a magnetic field leaking from the superconducting shield and a phase B of a current passing through the superconductive conductor are detected, and a phase difference between the phase A and the phase B is obtained so as to determine that a quench has occurred in the case where a difference between a reference phase difference and the obtained current phase difference exceeds a threshold.