Means and method for extinguishing a fire in at least one cable duct
CA 2255979 A1 · Owner: Draugelates, Gerhard · Inventors: Draugelates, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
At least one pipe (RO1), in which fire-extinguishing means (FM) under pressure is contained, is laid in at least one cable duct (CS11 CS12, CS13). The wall , of said pipe (RO1) is made from a material with a melting point which is selected to be lower than the ignition point of the cable casing of an adjacent cable.
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 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2019.
- 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.