Device for passing pipes or cables through an opening in a building

Patent metadata

Field	Value
Publication number	US-9982805-B2
Application number	US-201615171593-A
Country	US
Kind code	B2
Filing date	Jun 2, 2016
Priority date	Dec 9, 2013
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

The invention relates to a device for passing pipes or cables through an opening in a building. Said device comprises a sleeve-like housing that has an axial passage channel that is open at its opposite ends; bristles that are mounted on the walls of the passage channel in such a way that they are opposite each other and that are extended inwards in such a way that they mesh with one another in order to close the passage channel; and flexible strips of material that are mounted in the passage channel and that are coated with an intumescent material.

First claim

What is claimed is:

1. A device, comprising:
a sleeve-like housing that has a passage channel that is open at opposite ends;
brushes that are mounted on walls of the passage channel and are disposed opposite each other, wherein the brushes include bristles that extend inwards and that mesh to close the passage channel; and
flexible strips that are mounted in the passage channel and are coated with an intumescent material,
wherein the device is suitable for passing a pipe or cable through an opening in a building, and
wherein the flexible strips comprise a base material that comprises a non-flammable woven fabric and/or a woven glass fiber fabric.

2. The device of claim 1 , wherein the flexible strips protrude inwards from the walls of the passage channel.

3. The device of claim 1 , wherein the base material comprises a non-flammable woven fabric.

4. The device of claim 1 , wherein the base material comprises a woven glass fiber fabric.

5. The device of claim 1 , wherein the passage channel has an approximately rectangular cross section, and wherein the brushes are mounted on two parallel, opposite flat walls of the passage channel.

6. The device of claim 1 , wherein the brushes are arranged at an upper end of the passage channel in an installation position, and wherein the flexible strips are arranged so as to be staggered underneath the brushes.

7. The device of claim 1 , wherein the housing is provided with a radially outwards extending flange on one or both axial ends.

8. The device of claim 1 , wherein the device does not further comprise a mineral wool insulation.

9. The device of claim 1 , wherein the bristles comprise a fireproof inorganic fiber.

10. The device of claim 1 , wherein the bristles comprise a fireproof organic fiber.

11. The device of claim 5 , wherein the bristles are mounted over the entire widths of the parallel, opposite flat walls.

12. The device of claim 5 , wherein the flexible strips are mounted on the same parallel, opposite flat walls to which the brushes are mounted.

13. The device of claim 1 , wherein the passage channel has an approximately rectangular cross section, and wherein the flexible strips are mounted on two parallel, opposite flat walls of the passage channel.

14. The device of claim 13 , wherein the flexible strips are mounted over the entire widths of the parallel, opposite flat walls.

Assignees

• Hilti Ag

Inventors

• Paetow Mario
• Förg Christian
• Semler Rudolf
• Monden Thomas

Classifications

• H02G3/22

  Installations of cables or lines through walls, floors or ceilings, e.g. into buildings · CPC title

• F16L5/04 Primary

  to form a firebreak device · CPC title