Rail road hopper car fittings and method of operation
CA 2821428 C · Owner: National Steel Car Limited · Inventors: Bis, Tomasz; Forbes, James W.; Khattab, Mohamed A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A railroad hopper car has a first hopper. The hopper is a bottom dumping hopper. , A center sill passes through a lower region of the first hopper. The first hopper has a bifurcated , discharge that has a left hand portion and a right hand portion. There is a first door that is , movable to govern egress of lading from the left hand portion. A second door is movable to , govern egress of lading from said right hand portion. The first and second doors have respective , upper and lower margins. A beam runs across said car. It has a web and a flange. The beam is , mounted to the lower margins of the first and second doors. They are constrained by the beam to , move through the same …
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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 September 8, 2006 and granted May 21, 2019. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.