Rail road car truck and bolster therefor
CA 2817643 C · Owner: National Steel Car Limited · Inventors: Bis, Tomasz; Forbes, James W.; Hematian, Jamal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rail road freight car truck has a truck bolster and a pair of side frames the truck bolster , being mounted transversely relative to the side frames. The mounting interface between the ends , of the axles and the sideframe pedestals allows lateral rocking motion of the sideframes in the , trimmer of a swing motion truck such that the bolster can move laterally relative to the , sideframes. The range of travel of the bolster may be greater when the car is fully laded that , when the car has no lading. This may be achieved by the use of tapered bolster gibs. Friction , dampers are mounted to work between the bolster and the sideframes. The friction dampers may , be provided with brake …
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 December 3, 2004 and granted May 6, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 2024.
- 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.