B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
26/184
B22D 11/126 (2006.01) E06B 5/16 (2006.01)
Patent
CA 1186498
ABSTRACT OF THE DISCLOSURE 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 tempera- ture, 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 extending within the channel and defining a strait intermediate the opening of the channel and an interior chamber of the holder. There is further provided a method of making an intumescent seal comprising: providing a tubular holder having a longi- tudinal bore or interior chamber defined by a thickened long- tudinally extending portion of the holder contiguous with a relatively thin wall of the holder; filling the bore of the holder with solid intumescent material; and thereafter re- moving a longitudinally extending part of said thickened portion (as by a saw cut) thereby to leave part of said thickened portion as a baffle within the holder, the space left by said removed part forming a strait having an opening to the exterior of the holder and an opening to the bore of the holder.
388208
Dixon International Limited
Marks & Clerk
LandOfFree
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