Integrated security system for smoke extractor
CA 2322703 A1 · Owner: Zaniewski, Michel · Inventors: Zaniewski, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a system to be placed at the outlet of a duct (1) and is equipped with a suction device (6) such as a turbine for generating low pressure in the duct (1) characterised in that it comprises two separate air intakes (7 8) integrated in the extractor and arranged in locations under low pressure and high pressure respectively relative to atmospheric pressure said air intakes being connected to a pressure switch for triggering a security event when the detected differential pressure drops beneath a threshold value which indicates that the extractor is not functioning properly. The invention is a useful equipment for various premises in particular industrial or residential.
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 February 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 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.