Rail system for a freight transportation system
CA 2826729 C · Owner: The Texas A&M University System · Inventors: Olson, Leslie E.; Roop, Stephen S.; Morgan, Curtis A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rail system for a freight transportation system comprising: a concrete substrate; a plurality of flat rail sections coupled to the concrete substrate and arranged in an end-to-end manner; wherein the junction of adjacent rail sections comprise at least one protrusion coupled to a first end of one of the rail sections and at least one recess formed in a second end of the other rail section; and wherein the protrusion is disposed within the recess in such a manner that a spacing exists between a free end of the protrusion and a bottom of the recess to allow the rail sections to expand and contract as the temperature of the rail sections change.
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 May 24, 2005 and granted November 15, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2025.
- 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.