Flywheel power supply
CA 2284655 C · Owner: Bushko, Dariusz A. · Inventors: O'Rourke, James; Hockney, Richard L.; Serdar, Luka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power supply device for providing uninterrupted power for a period of time is disclosed. The power supply device has a controller and a flywheel device. The flywheel device has a housing (45) that contains a flywheel rotor (15) and a motor/generator (80) rotor. The flywheel rotor (15) and the motor/generator (80) rotor are mounted on a common shaft. An active axial magnetic bearing (50) is located to support the shaft for frictionless rotation. The bearing provides support for the shaft, the flywheel rotor (15) and motor/generator rotor (80). The axial magnetic bearing (50) is attached to the housing (45) and provides, in combination with the motor/generator (80) rotor a flux path …
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 March 13, 1998 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2020.
- 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.