Locomotive brake pipe valve cut-out failure detection and correction
CA 2437284 C · Owner: Kiss, James · Inventors: Smith, Eugene A.; Kiss, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a distributed power railroad train, an apparatus for equalizing the equalizing reservoir (105) pressure in the remote power unit (100) and the brake pipe (101) pressure. With these pressures equal the remote unit (100) , cannot charge the brake pipe (101) while the lead unit (100) attempts to vent the brake pipe (101) to command a brake application at the railcars (200) of the train.
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 November 1, 2002 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2024.
- 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.