Track systems for model railroads
CA 2176624 C · Owner: Grubb, Lawrence B. · Inventors: Grubb, Lawrence B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to track locking systems for model railroads of the type in which separate sections of track are removably connected to form a desired closed pattern over which a model train will travel. The track sections include electrically conductive rails for supporting and guiding the model train thereon, and for providing electrical energy from a source for driving the train. Individual track bed sections connected to each other are joined at two laterally offset positions to enhance the stability of the sections removably locked together. The locking elements on the respective track sections joined together are oriented at substantially right angles to the …
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 15, 1996 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2018.
- 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.