Railway hopper car with longitudinal discharge openings
CA 2745780 C · Owner: Trinity Industries, Inc. · Inventors: Sindelar, Joseph M.; Herzog, John C.; Creighton, George S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A railcar with longitudinal discharge openings is disclosed. The railcar includes an underframe a pair of sidewall assemblies and a hopper formed between the sidewall assemblies. The underframe has a center sill and a pair of side sills. The center sill is disposed between the pair of side sills along a generally longitudinal axis of the railcar. A plurality of horizontal cross bearers extend between and are coupled with the pair of side sills and are spaced longitudinally from each other along the center sill. First and second diagonal cross braces extend from upper portions of sidewall assemblies to lower portions of other sidewall assemblies. The first and second diagonal cross braces …
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, 2004 and granted February 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2026.
- 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.