Diagonally braced rail truck with improved end block
CA 2130057 C · Owner: Berg, Thomas R. · Inventors: Sarnicki, John T.; Berg, Thomas R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A railroad car truck includes a pair of side frames and a bolster which is supported by springs on the side frame. There are diagonal cross braces attached to the side frames with each cross brace being attached to one side frame on one side of the bolster and being attached to the other side frame on the opposite side of the bolster. There are mounting brackets fixed to the side frame and there is an end block attached with elastomeric mounting elements to each mounting bracket. The end blocks mount the cross braces. Each end block has a profile such as not to materially interfere with the scan area of a hot box detector mounted adjacent one of the railroad track rails.
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 12, 1994 and granted August 25, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2016.
- 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.