Well car structure
CA 2359695 C · Owner: National Steel Car Limited · Inventors: Forbes, James W.; Butcher, Ronald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A well car has a retractable guide assembly for changing the effective width of a container well of a railroad freight car. The guide assembly has a housing having a pair of spaced apart walls. The guide assembly includes a pair of walls with cams in the nature of a pair of aligned slots. The guide has a bar that follows the slots between an extended position and a retracted position. The well car also has a floor structure that includes several cross members for supporting containers carried in the well. Some of the cross members have a pair of container support bracket castings at either end and a beam member rigidly mounted between the container support brackets to yield a rigid cross …
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 April 10, 1995 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2017.
- 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.