A method of identifying and locating trainline power supplies
CA 2332899 C · Owner: Stevens, Dale R. · Inventors: Lumbis, Anthony W.; Stevens, Dale R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of identifying and locating the trainline power supplies (24) on a train wherein the power supplies each are a node on a network (10). The locations of the power supply is determined by causing the power supply node (24/60) to transmit its identity on the network. The power supply node includes a service pin (66) and a signal is supplied to the service pin to cause the power supply node to transmit its identity on the network. A second node (20/60) is provided at the identifiable location with each power supply and is commanded to cause the power supply at its location to transmit its identity on the network.
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 October 25, 1999 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2021.
- 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.