Rail car dumpers
CA 1301547 C · Owner: Strachan & Henshaw Limited · Inventors: Dowden, Paul John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary rail car dumper has a rail car platform forming part of a rigid tipping structure which through, end ring members, is mounted for rotation about a central longitudinal axis for tipping a rail car to dump its contents. Between the rail car platform and the ring members are pin joint connections allowing flexure under gravity loading independently of the ring members at, least before tipping. The maximum stresses occurring during operation of the dumper are thereby reduced. The dumper installation is also provided with means for extending the length of the rail car platform in order to handle rail cars of different lengths in unit trains.
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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- 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.