High temperature superconducting rotor power leads
CA 2384481 C · Owner: Alexander, James Pellegrino · Inventors: Alexander, James Pellegrino; Laskaris, Evangelos Trifon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The resistive power leads of a high temperature superconducting (HTS) rotor field , coil are located in vacuum near the rotor axis and are cooled by thermal conduction to , the return flow path (20) by bonding the leads to the tubing bulkhead (18) through , ceramic insulators (22). The lead length cross-section and electrical , resistivity are optimized for minimum heat conduction and ohmic resistance heat transfer to the cold , gas. Thermal expansion or contraction of the leads is accommodated by flexible sections at the warm and cold end of the leads.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 2, 2002 and granted March 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.