Wheeled hydraulic support for snowploughs
CA 2227453 C · Owner: Vezina, Rejean · Inventors: Vezina, Rejean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic support with wheels for a snowplough; it attaches to the structure of a snowblower and is used to raise the snowplough to a certain height off the ground. The system comprises a dual-action cylinder attached to the rear of the structure with an angle plate. The cylinder rod forms a ball joint with the end of a pivoting arm which also attaches to the angle plate the ball joint forming the apex of an acute angle. The end of the pivoting arm traces a circle arc. Double wheels are located at the ball joint and follow the circle arc when the ball joint is pushed by the cylinder rod the wheels thus entering into contact with the ground to raise the snowblower structure.
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 23, 1998 and granted May 25, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 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.