Seal with fire protection
AssigneeRoxtec AB
InventorNiklas Åkesson
Life of this patent
Estimating the term…
Abstract
A seal for pipe penetration or the like is formed, in at least one embodiment, of two halves, the seal received in a sleeve or opening of a wall or the like. The seal forms a central opening for a pipe or tube when the seal halves are brought together. Each seal half is formed of two base parts. Between the base parts a layer of intumescent material is placed. On the inside of the base parts peelable layers are arranged. The layers are peeled off to adapt the inner diameter of the seal to the pipe or tube received. In case of fire, the intumescent material will expand which expansion will collapse and close off the pipe or tube received in the seal.
Claims13
A seal forming a pipe or tube penetration or transition, the seal comprising:
- two substantially identical and axially compressible seal halves forming at least one central opening for a pipe or tube when the seal halves are brought together, wherein each of the two seal halves includes two base parts;
- mechanical studs in contact with the base parts and separate the base parts and form a gap between the base parts, the gap having a fixed length in an axial direction of the seal;
- a layer of intumescent material in the gap between the mechanical studs, wherein the mechanical studs maintain the fixed length during compression of the seal halves;
- and
- a front fitting and a rear fitting, respectively, is arranged at opposing ends of the base parts, which fittings are connected to each other by means of screws received in through openings of the base parts and the layer of intumescent material.
Dependencies are inferred from the claim text.