Pulling lug for railway vehicle coupler
CA 2014530 C · Owner: Amsted Industries Incorporated · Inventors: Kaufhold, Horst T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A railway coupler is provided having a coupler head comprising pulling lugs, behind which compound fillets of variable increasing radii have been inserted. The compound fillets reduce the stress concentration behind the lugs by distributing load over a greater curved surface area in order to decrease the possibility of fatigue cracking and failure of the pulling lugs.
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 April 12, 1990 and granted July 9, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2012.
- 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.