Fire resistant seals
AssigneeDixon International Limited
InventorBernard Dixon
Life of this patent
Estimating the term…
Abstract
A fire-resistant seal for gaps between a door or window and adjacent structure, comprises a tubular holder which contains a fire-resistant barrier material and has a lengthwise opening through which the material can exude when the holder is subjected to hot smoke or fire. To protect the material against a tamperer who inserts a probe into the opening, a baffle surface, which is coextensive with the opening, is provided inside the holder. The baffle surface forms with adjacent surfaces of the holder a strait which extends between the opening and the interior of the holder where the material is retained. The holder may also support an elastomeric draught excluder.
Claims8
A fire-resistant seal for application to a structure, comprising
- a holder of substantially tubular form for securing to the structure, the holder having an external elongate opening extending therealong,
- a chamber defined by the interior of the holder,
- a fire-resistant barrier material which swells under fire-conditions, retained in said chamber in the holder,
- and a baffle surface extending within the holder and forming with the holder interior adjacent to the baffle surface a strait which extends between the opening and the chamber, the strait being co-extensive with the length of the opening.
Dependencies are inferred from the claim text.