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. 17, 2020
Filed:
Aug. 20, 2018
Tokamak Energy Ltd., Oxfordshire, GB;
Greg Brittles, Abingdon, GB;
Tokamak Energy Ltd., Oxfordshire, GB;
Abstract
According to a first aspect of the present invention, there is provided a method of forming a superconducting joint between ReBCO tapes. Two or more ReBCO tapes are provided, each having an exposed ReBCO region. A bridge is provided, comprising an exposed ReBCO layer and an oxygen-permeable backing on the exposed ReBCO layer. Each exposed ReBCO region is bonded to the exposed ReBCO layer of the bridge by heating to a first temperature (T) in an environment where the partial pressure of oxygen is sufficiently low that the melting point of the ReBCO (T) is less than the melting point of silver (T), the temperature (T) being between the melting point of the ReBCO (T) and the melting point of silver (T), (T<T<T). The resulting joint is annealed at a second temperature (T) which is less than the melting point of ReBCO (T) (T<T), for a time (t), in an environment where the partial pressure of oxygen is sufficient to reoxygenate the ReBCO at the second temperature (T).