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:
Dec. 13, 2005
Filed:
Nov. 22, 2002
Yushi Miura, Ibaraki, JP;
Kaname Kizu, Ibaraki, JP;
Katsuhiko Tsuchiya, Ibaraki, JP;
Kunihiro Matsui, Ibaraki, JP;
Toshinari Ando, Ibaraki, JP;
Yushi Miura, Ibaraki, JP;
Kaname Kizu, Ibaraki, JP;
Katsuhiko Tsuchiya, Ibaraki, JP;
Kunihiro Matsui, Ibaraki, JP;
Toshinari Ando, Ibaraki, JP;
Japan Atomic Energy Research Institute, Tokyo, JP;
Abstract
A method for reducing ac loss in a superconducting coil of cable-in-conduit type superconductor made from chrome-coated compound superconducting strands, characterized in that when a superconducting coil is produced by the wind-and-react technique, bending or twist strain is applied in an amount of 0.15˜0.3% to the conductor cable portion after it has been heat-treated to form the superconducting compound, thereby separating the individual superconducting strands the chrome coat on which sintered as the result of heat treatment and further characterized in that the applied bending or twist strain is thereafter reverted to 0.1% or less, thereby reducing the ac loss of the superconducting coil.