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. 25, 2010
Filed:
Dec. 16, 2005
Masayuki Hirose, Osaka, JP;
Masayuki Hirose, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
The invention offers a superconducting cable easy to form a twisted structure even when a plurality of cable cores are used and a DC transmission system incorporating the superconducting cable. A superconducting cablehas a structure formed by twisting together two types of cable cores (two first coresand one second core) having different structures and then housing them in a heat-insulated pipe. The first coreseach have a first superconducting layer, to be used either as an outward line or for the transmission for a pole in DC transmission, and have no superconducting layer other than the first superconducting layer. The second corehas a second superconducting layer, to be used as a return line or neutral line in DC transmission, and has no superconducting layer other than the second superconducting layer. The second superconducting layerhas an inner diameter larger than the outer diameter of the first superconducting layer