Lifting carriage
CA 2000713 A1 · Owner: Rousseau, Yvon J. · Inventors: Rousseau, Yvon J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lifting carriage having a rectangular frame provided with four corner posts for guiding an elevating platform mounted between these posts. Each post has a toothed rack on which a toothed gear mounted on the platform is engaged for raising the platform. The toothed gears are actuated by a motor mounted on the platform through a power chain. The carriage is mounted on wheels which can be actuated by a motor for horizontally moving the carriage. The carriage is also provided with spinning wheels on its side, whereby, the carriage, when tilted on its side can, be moved sideways. The elevating platform is provided with guiding wheels adapted to abut against the corner posts for allowing a …
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 October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- 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.