Intumescent fire sleeve, coil of several intumescent fire sleeves and method for installation of an intumescent fire sleeve

Patent metadata

Field	Value
Publication number	US-2018306352-A1
Application number	US-201615738080-A
Country	US
Kind code	A1
Filing date	Jun 9, 2016
Priority date	Jun 19, 2015
Publication date	Oct 25, 2018
Grant date	—

Abstract

The disclosure relates to an intumescent fire sleeve for a conduit, such as a pipe, a cable or a device penetrating a wall, a ceiling or a floor in a building, said fire sleeve comprising at least one layer of intumescent material and one carrier being connected to the layer of intumescent material, and said fire sleeve having a length (L) that at least corresponds to a circumference of the conduit for which it is intended, with the characteristics that at least the carrier has spring-loaded characteristics and that the carrier, in a non-applied position has the ability to coil onto itself in a spiral manner. The disclosure also relates to a coil of such intumescent fire sleeves and to a method for installation of such an intumescent fire sleeve.

First claim

1 . An intumescent fire sleeve for a conduit penetrating a wall, a ceiling or a floor in a building, said fire sleeve comprising at least one layer of intumescent material and one carrier being connected to the layer of intumescent material, and said fire sleeve having a length (L) that at least corresponds to a circumference of the conduit for which it is intended,
wherein at least the carrier has spring-loaded characteristics and that the carrier, in a non-applied position, has the ability to coil onto itself in a spiral manner.

2 . The fire sleeve according to claim 1 , wherein the carrier has the ability to coil itself in a spiral manner with an inner diameter (D) that is less than the length (L) divided by π(D<L/π).

3 . The fire sleeve according to claim 1 , wherein the carrier is made of metal and/or resin in form of a sheet and/or at least one wire having spring-loaded characteristics.

4 . The fire sleeve according to claim 1 , wherein the layer is divided in at least two parts spaced apart from each other in longitudinal direction of the carrier and/or in that the layer is provided with notches running perpendicular to the longitudinal direction of the carrier.

5 . The fire sleeve according to claim 1 , wherein the layer has a shorter length in longitudinal direction than the carrier.

6 . The fire sleeve according to claim 1 , wherein the layer is connected to the carrier in a way that carrier and layer are relatively movable to each other in longitudinal direction of layer and carrier.

7 . The fire sleeve according to claim 1 , wherein the layer has a length in longitudinal direction of the carrier which is equal to the outer circumference of the conduit for which it is intended.

8 . The fire sleeve according to claim 1 , wherein the carrier is provided with fixing elements which are used to connect the carrier with the wall, the ceiling or the floor of the building.

9 . The fire sleeve according to claim 1 , wherein the carrier and/or the layer is provided with measuring means indicating where to shorten at least the layer to a desired length for mounting.

10 . The fire sleeve according to claim 1 , wherein the layer and the carrier are connected to each other in an area of a longitudinal end of layer and carrier.

11 . The fire sleeve according to claim 1 , wherein the carrier is embedded between two layers being arranged parallel to each other.

12 . The fire sleeve according to claim 1 , wherein the layer is provided with a coverage, e.g. a foil, whereby a cavity is formed between the layer and the coverage and whereby the carrier is arranged in the cavity.

13 . The fire sleeve according to claim 1 , wherein the carrier is fixable in its extended position and in that the carrier can be caused to coil onto itself by applying a force to the carrier and/or the layer in a direction perpendicular to the longitudinal direction of the layer and/or the carrier.

14 . A coil of several intumescent fire sleeves for conduits penetrating a wall, a ceiling or a floor in a building, each fire sleeve comprising at least one layer of intumescent material and one carrier being connected to the layer of intumescent material, and each fire sleeve having a length (L) that at least corresponds to a circumference of the conduit for which it is intended, whereby each layer has a rectangular shape with two side surfaces and two end surfaces connecting the side surfaces,
wherein the coil comprises at least two fire sleeves according to claim 1 arranged in a line and connected via end surfaces of the fire sleeves.

15 . The claim according to claim 14 , wherein at least two lines of fire sleeves are connected to each other via side surfaces of adjacent fire sleeves of each line.

16 . A method for installation of an intumescent fire sleeve to the circumference of a conduit penetrating a wall, a ceiling or a floor in a building, whereby said fire sleeve comprising at least one layer of intumescent material and one carrier being connected to the layer of intumescent material is applied to the circumference of the conduit penetrating the wall, the ceiling or the floor in a building, and whereby said fire sleeve having a length (L) which at least corresponds to the circumference of the conduit is caused to take a shape of the circumference of the conduit by using spring-loaded characteristics of the carrier to coil itself onto the conduit.

17 . The method according to claim 16 , wherein the fire sleeve is applied onto the conduit so that the layer is in clamp-fitted contact with an outer surface of the conduit.

18 . The method according to claim 16 , wherein the layer of intumescent material is in contact with the conduit.

Assignees

• Rockwool Int

Inventors

• Albers Rainer

Classifications

• A62C2/06

  Physical fire-barriers · CPC title

• F16L57/04

  against fire or other external sources of extreme heat · CPC title

• F16L5/04 Primary

  to form a firebreak device · CPC title

• H02G3/0412

  Heat or fire protective means (for fire in electric circuits A62C3/16) · CPC title

• F16L2201/60

  Identification or marking · CPC title