Fifth wheel construction having rotatable bearing plate
CA 2109743 A1 · Owner: Poirier, Bertin · Inventors: Poirier, Bertin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a fifth wheel assembly for coupling a tractor to a trailer wherein the assembly includes a housing and a fixed plate which is secured to the trailer unit, and a king pin assembly comprising a body member rotatably mounted within the housing, a plate member rotatably mounted with respect to the fixed plate and a king pin secured to said body member and plate member and being rotatable therewith. The assembly minimizes friction and reduces maintenance.
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 November 23, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2015.
- 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.