Hydraulic jack system
CA 2076769 C · Owner: Les Entreprises Normand Laître Inc. · Inventors: Laitre, Normand
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic jack system used for rerailing rail vehicles and for also lifting and lowering heavy loads comprises a base pivotable with respect to the horizontal, giving the hydraulic jack vertical and lateral lift motion. This is particularly advantageous when rerailing rail vehicles as both of these motions are necessary. The hydraulic jack of this invention also has the advantage of being small, portable and easy to assemble.
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 August 25, 1992 and granted April 5, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2014.
- 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.