Railway hopper car
CA 1197728 A · Owner: Harvatin, Louis J. · Inventors: Harvatin, Louis J.; Anderson, Arthur I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A covered railway hopper car includes side walls comprising upper arcuate side sheet and lower flat inclined side sheet portions. The upper edge of the flat side sheet is bent to form a longeron which extends intermediate the height of the side wall and which is attached adjacent the lower edge of the arcuate side wall. A side sill extends longitudinally on the exterior of the flat side sheet to form, together with the longeron reinforcement, for the side walls. The car also includes an end structure comprising a vertical plate extending upwardly into support of the end slope walls of the car at a location intermediate the length of the end slope walls and a vertical support on the interior …
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
- Granted December 10, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2002.
- 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.