Snowplow deflection system protecting snowplow vehicles and windshields
CA 2020989 C · Owner: Collins, Michael J. · Inventors: Pease, Walter G.; Smith, Arthur J.; Collins, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A snow deflection system for use with vehicle propelled snowplows is designed to deflect snow which passes over the plow or moldboard away from the propelling vehicle. The top margin of the moldboard has permanently attached to it belt means which extends forwardly and downwardly to control and maintain the position of generally all of the snow in general close proximity with the moldboard. By mounting arcuate foil means in spaced apart relationship above the top margin of the moldboard and the belt means, an airflow space is defined therebetween, thereby effectively directing the flow of snow above the moldboard through the airflow space and directing it downwardly away from the snowplow …
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 July 12, 1990 and granted July 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 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.