Fire break for ventilation ducts
CA 1319293 C · Owner: Spaeth, Michael Max · Inventors: Spaeth, Michael Max
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to a fire break for ventilation ducts comprising at lest one package of parallel fireproofing plates made of a material that expands strongly when exposed to heat said plates being, oriented in the direction of flow in the ventilation duct with the package, filling the cross section of the ventilation duct. To prevent the flames from breaking through and/or to prevent deflagrations into the next fire control sector during the expanding material's reaction time at least one insert that, fills the cross section of the ventilation duct is disposed in the vicinity of the package, said insert being filled of expanded material that is a strongly thermally conductive …
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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
- Granted June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
- 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.