Trailer hitch
CA 2178276 C · Owner: Russell, Gregory A. · Inventors: Russell, Gregory A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved trailer hitch which can be used to more easily attach a trailer to a towing vehicle by simply engaging a horizontal coupling shaft in a latch assembly and closing the latch. The trailer hitch comprises six main components: a yoke assembly a latch assembly, a transverse horizontal coupling shaft a connector bar, a trailer yoke and a pivot bolt. The yoke assembly provides for rotation about the vertical axis the latch assembly provides for rotation about the transverse horizontal axis and the pivot bolt for rotation around the longitudinal horizontal axis. A trailer can be easily attached to a towing vehicle by placing the transverse horizontal shaft in the latch assembly and …
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 June 5, 1996 and granted November 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2018.
- 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.