US 12,255,000 B2
Compound superconducting twisted wire and rewinding method for compound superconducting twisted wire
Masahiro Sugimoto, Tokyo (JP); Hirokazu Tsubouchi, Tokyo (JP); Daisuke Asami, Tokyo (JP); Hideki Ii, Tokyo (JP); Satoshi Awaji, Sendai (JP); and Hidetoshi Oguro, Hiratsuka (JP)
Assigned to FURUKAWA ELECTRIC CO., LTD., Tokyo (JP); TOHOKU UNIVERSITY, Sendai (JP); and TOKAI UNIVERSITY EDUCATIONAL SYSTEM, Tokyo (JP)
Appl. No. 17/280,718
Filed by FURUKAWA ELECTRIC CO., LTD., Tokyo (JP); TOHOKU UNIVERSITY, Sendai (JP); and TOKAI UNIVERSITY EDUCATIONAL SYSTEM, Tokyo (JP)
PCT Filed Sep. 20, 2019, PCT No. PCT/JP2019/037012
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/066908, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-185632 (JP), filed on Sep. 28, 2018.
Prior Publication US 2022/0115168 A1, Apr. 14, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01B 12/08 (2006.01); C22C 9/00 (2006.01); C22C 9/02 (2006.01); H01B 12/10 (2006.01); H01F 6/06 (2006.01); H01B 12/02 (2006.01)
CPC H01B 12/08 (2013.01) [C22C 9/00 (2013.01); C22C 9/02 (2013.01); H01B 12/10 (2013.01); H01F 6/06 (2013.01); H01B 12/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A compound superconducting twisted wire comprising a plurality of compound superconducting strands being twisted to form a twisted structure,
wherein each of the compound superconducting strands comprises a core-like compound superconductor part, a cylindrical reinforcing part and a cylindrical stabilizing part,
wherein the core-like compound superconductor part comprises a plurality of compound superconducting filaments and a first matrix, the compound superconducting filaments each comprising a compound superconducting phase, the first matrix comprising the plurality of compound superconducting filaments embedded therein and a first stabilizing material,
wherein the cylindrical reinforcing part is disposed on an outer circumferential side of the compound superconductor part, and comprises a plurality of reinforcing filaments and a second matrix, the second matrix comprising the plurality of reinforcing filaments embedded therein and a second stabilizing material,
wherein the cylindrical stabilizing part is disposed on at least one side of an inner circumferential side and an outer circumferential side of the reinforcing part, and comprises a third stabilizing material, and
wherein a volume ratio of the reinforcing part relative to the compound superconducting strand is larger than a volume ratio of the compound superconductor part relative to the compound superconducting strand.