Electrically driven, circumferentially supported fan
CA 2026471 C · Owner: Paccar Inc · Inventors: Jorgensen, Iner M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circumferentially supported fan assembly for drawing cooling air through a radiator of a vehicle is described. The fan includes a fan ring extending circumferentially around the periphery of the fan the blades, of the fan extending from a central region to the fan ring. The entire weight of the fan is borne by a fan support assembly which extends around the periphery of the fan ring outside the path of air flowing through the fan. The fan is the rotor of an electrically driven motor. A rotor flange of the fan ring extends transverse to the axis of the rotation of the fan, providing a greater torque advantage for the motor. An electrical control circuit selectively controls the speed of …
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 September 28, 1990 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2012.
- 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.