Magnetic clutch system for cooling fan drive
CA 2302238 A1 · Owner: American Metal & Plastics, Inc. · Inventors: Link, Larry Ray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic slip clutch (26, 415) is disclosed which may be fully uncoupled, fully coupled or coupled in a modulated manner for transmission of variable torque. One use of the clutch is to provide a variable speed drive of a fan (24, 424) having fan blades (20, 420) for use with an internal combustion engine (12) such as on a vehicle (10). A torque transfer between a clutch driving element (202, 416, 616) and a driven element (200 418, 618) is by a , controller and a circuit (30 70, 702, 722) that modules the electrical power to control the magnetic field between the driving element (202 416, 616) and , the driven element (200 418, 618). The preferred driving element (202 416, 616) …
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 August 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 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.