Positive locking trailer tail
CA 2195255 C · Owner: Peakman, Ken · Inventors: Peakman, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a flat bed trailer including a hinged ramp tail which can be raised between a, lower loading and an upper transport position. The ramp tail is raised and lowered by a linkage, and extensible lifting means acting on the linkage. The advantange of the linkage of the present, invention is that the extensbile liftming means - hydraulic cylinders - are retracted when the ramp, is in its raised position rather than being extended. In addition the linkage provides for an , over-center lock further strengthening the ramp tail in its raised position thus significantly lessening, the amount of strain placed on the hydraulic cylinders and other mechanics as compared to that, in …
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 16, 1997 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2019.
- 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.