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

Patent metadata

Field	Value
Publication number	US-11242946-B2
Application number	US-202016855049-A
Country	US
Kind code	B2
Filing date	Apr 22, 2020
Priority date	Dec 9, 2013
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

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 housing comprising a channel with open ends;
a curtain extending into the channel at a first location; and
a fire-retardant material extending into the channel at a second location,
wherein the curtain moves within the channel in an installed state, the curtain moving to accommodate passage of an object through the channel, and wherein the fire-retardant material curves in an axial direction within the channel and at least partially surrounds the object in the channel in the installed state, the housing coupled to an opening in a barrier.

2. The device of claim 1 , wherein the curtain extends at least partially into the channel.

3. The device of claim 1 , wherein the curtain includes one or more portions that move in the installed state to accommodate passage of the object through the channel.

4. The device of claim 3 , wherein:
the curtain includes a plurality of said portions; and
the plurality of said portions have substantially a same length.

5. The device of claim 3 , wherein the curtain moves and the fire-retardant material deflects at a same time to allow passage of the object through the channel in the installed state.

6. The device of claim 1 , wherein the curtain is adjacent to one of the ends of the channel.

7. The device of claim 1 , wherein the fire-retardant material curves in the axial direction within the channel in the uninstalled state.

8. The device of claim 1 , wherein the fire-retardant material comprises:
a first curved portion extending from a first surface of the housing;
a second curved portion extending from a second surface of the housing; and
the first surface is in opposing relation to the second surface.

9. The device of claim 1 , wherein the fire-retardant material is between the ends of the channel.

10. The device of claim 1 , wherein the fire-retardant material comprises an intumescent material.

11. The device of claim 10 , wherein the intumescent material is oriented to expand and block the channel under heat.

12. The device of claim 1 , wherein:
the object is a pipe or cable; and
the barrier is a wall or ceiling of a building.

13. The device of claim 1 , wherein the housing has a rectangular shape.

14. The device of claim 1 , wherein the curtain extends from at least one surface of the housing.

15. The device of claim 1 , wherein the curtain includes a plurality of portions extending toward a central axis of the channel and wherein each of the plurality of portions is flexible to move in at least two directions.

16. The device of claim 1 , wherein the fire-retardant material extends in a direction toward the channel and deflects to accommodate the object in the installed state.

Assignees

• Hilti Ag

Inventors

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

Classifications

• F16L5/04 Primary

  to form a firebreak device · CPC title

• H02G3/22

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