Intumescent seals
CA 1186498 A · Owner: Dixon International Limited · Inventors: Dixon, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a seal for sealing a pivotally mounted door against draughts, smoke and fire the device, comprising an elongate holder defining at least two channels, each having an opening a first of the channels retaining a, resilient element having a blade protruding from the opening of the channel and for acting as a draught and smoke seal the second channel containing intumescent material the intu-, mescent material expanding through the opening of the second channel for forming a fire seal when subjected to high temperature, the blade being at an acute angle to a face of the holder in which the opening of the second channel is provided the second channel being provided with a baffle …
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
- Granted May 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2002.
- 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.