Heavy duty air filter with integral snow valve
CA 2008269 C · Owner: Alliedsignal Inc. · Inventors: Machado, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air cleaner assembly for a motor vehicle includes and housing which carries a substantially flat valve cover plate which defines a pair of openings. A valve is slidable relative to the valve cover plate through a linkage operated from the vehicle operator's compartment to cover one or the other of the openings in the valve cover plate. During normal operation of the vehicle combustion, air is communicated to the air cleaner housing through the normal air induction system. However, when heavy snow blocks communication through the normal air induction system, the vehicle operator operates the linkage to move the valve to a position opening the other opening into the air cleaner, so that …
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 January 22, 1990 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 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.