Self-educing foam nozzle
CA 2339128 A1 · Owner: Kolzcz, David · Inventors: Kolzcz, David; Steingass, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A firefighting nozzle (10) has a low-turbulence liquid flow channel (20) that is directed outwardly by a baffle (30). Surrounding the flow channel (20) is an annular concentrate chamber (62). The concentrate chamber (62) leads from a concentrate inlet (14) to a concentrate entry port (50) on a rearward wall (52) opposed to the baffle (30). Liquid flowing past the baffle (30) draws concentrate through the concentrate entry port (50) into the flow. The concentrate and liquid subsequently mix to produce firefighting foam.
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 March 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 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.