Magnetic condensing system for cryogenic engines
CA 2486428 A1 · Owner: Minovitch, Michael A. · Inventors: Minovitch, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is provided for generating an artificial heat sink below ambient temperature for a cryogenic condenser (32) by isothermally magnetizing a paramagnetic fluid and removing the magnetic field thereby , creating a temperature drop in the fluid by the magentocaloric effect. The heat of magnetization is converted into mechanical work by initially placing the fluid inside a sealed chamber (80) with a door (76) that opens to a conduit (70) leading into the bore of a superconducting solenoid (72). When the solenoid (72) is energized, it creates a strong axial magnetic field that exerts magnetic attractive forces on the fluid. When the fluid is released by opening the …
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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 16, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2025.
- 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.