Air, acoustic and/or fire sealing sleeve insert and air, acoustic and/or fire sealing device

Patent metadata

Field	Value
Publication number	US-12467559-B2
Application number	US-202117348952-A
Country	US
Kind code	B2
Filing date	Jun 16, 2021
Priority date	Jul 28, 2015
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A fire-protection apparatus contains a housing with a passage, and an insert containing a plurality of sections made of a flexible material.

First claim

The invention claimed is:

1 . A fire-protection apparatus, comprising:
a hollow housing comprising a passage; at least one bracket having at least one opening, configured for receiving a fastener to fasten the apparatus to a wall, floor, or ceiling; and an insert in or coupled to the hollow housing and comprising: a plurality of sections, wherein the plurality of sections are tapered and are separated from one another by a plurality of slits arranged in a radial pattern in a 360° arrangement around a hole in the insert in an installed state, and configured to move flexibly to accommodate one or more lines extending through the hole and the passage of the housing, the plurality of sections comprising a fire-resistant material configured to provide an air seal, an acoustic seal, a smoke seal, and/or a fire seal, wherein the at least one bracket is configured so that the housing and the insert extend at least in part past the bracket and outside the surface of the wall, floor, or ceiling in the installed state, wherein the fire-protection apparatus does not comprise a gasket outside of the hollow housing for sealing a wall penetration, wherein the plurality of sections comprises a plurality of elevations and a plurality of valleys, and wherein the elevations and the valleys extend along a longitudinal axis from a front to a back of each section, and along a radial axis from an outer portion toward a central portion of each section.

2 . The fire-protection apparatus of claim 1 , wherein the passage extends along the longitudinal axis passing through the hollow housing.

3 . The fire-protection apparatus of claim 1 , wherein the plurality of sections have substantially a same shape.

4 . The fire protection apparatus of claim 1 , wherein the fire-resistant material comprises an intumescent material.

5 . The fire-protection apparatus of claim 1 , wherein each of the plurality of sections extends in a radial direction relative to the hole in the insert in the installed state.

6 . The fire-protection apparatus of claim 1 , wherein an outer boundary of the insert has a shape that substantially corresponds to a shape of the housing.

7 . The fire-protection apparatus of claim 1 , wherein the hole is smaller than the passage.

8 . The fire-protection apparatus of claim 1 , wherein the hole is aligned with a central longitudinal axis of the passage.

9 . The fire-protection apparatus of claim 1 , further comprising:
the fastener, wherein the fastener is configured to couple the hollow housing to a building structure through which the one or more lines pass in the installed state.

10 . The fire-protection apparatus of claim 1 , wherein the plurality of elevations and the plurality of valleys are arranged in an alternating pattern.

11 . The fire-protection apparatus of claim 1 , wherein at least one of the plurality of elevations or the plurality of valleys are configured to move around the one or more lines to seal the one or more lines.

12 . The fire-protection apparatus of claim 1 , wherein the insert is coupled to an open end of the hollow housing.

13 . The fire-protection apparatus of claim 1 , further comprising at least one second insert in or coupled to the hollow housing, the at least one second insert having a plurality of slits arranged in a second pattern configured to provide an air seal, an acoustic seal, a smoke seal, and/or a fire seal,
wherein the insert and/or the at least one second insert is configured to expand to seal the passage around the one or more lines in the presence of heat.

14 . The fire-protection apparatus of claim 1 , further comprising a screw as the at least one fastener.

15 . The fire-protection apparatus of claim 1 , wherein outer ends of the slits are in an interior region of the insert, inwardly removed from an outer edge of the insert, and wherein the plurality of sections that are tapered and are separated from one another by the plurality of slits comprise an intumescent material.

16 . The fire-protection apparatus of claim 1 , wherein the plurality of elevations and h plurality of valleys slope in an axial direction and/or in a radial direction.

17 . A fire-protection apparatus, comprising:
a hollow housing comprising a passage; at least one bracket having at least one opening, configured for receiving a fastener to fasten the apparatus to a wall, floor, or ceiling; and an insert in or coupled to the hollow housing and comprising: a plurality of sections, wherein the plurality of sections are tapered and are separated from one another by a plurality of slits arranged in a radial pattern relative to a hole in the insert in an installed state, wherein adjacent slits in the plurality of slits extend along linear directions that intersect at an acute angle at the hole in the insert, wherein the plurality of sections are configured to move flexibly to accommodate one or more lines extending through the hole and the passage of the housing, the plurality of sections comprising a fire-resistant material configured to provide an air seal, an acoustic seal, a smoke seal, and/or a fire seal, wherein the at least one bracket is configured so that the housing and the insert extend at least in part past the bracket and outside the surface of the wall, floor, or ceiling in the installed state, wherein the fire-protection apparatus does not comprise a gasket outside of the hollow housing for sealing a wall penetration, wherein the plurality of sections comprises a plurality of elevations and a plurality of valleys, and wherein the elevations and the valleys extend along a longitudinal axis from a front to a back of each section, and along a radial axis from an outer portion toward a central portion of each section.

18 . A fire-protection apparatus, comprising:
a hollow housing comprising a passage; at least one bracket having at least one opening, configured for receiving a fastener to fasten the apparatus to a wall, floor, or ceiling; and an insert in or coupled to the hollow housing and comprising: a plurality of sections, wherein the plurality of sections are tapered and are separated from one another by a plurality of slits arranged in a radial pattern in a 360° arrangement around a hole in the insert in an installed state, and configured to move flexibly to accommodate one or more lines extending through the hole and the passage of the housing, the plurality of sections comprising a fire-resistant material configured to provide an air seal, an acoustic seal, a smoke seal, and/or a fire seal, wherein the at least one bracket is configured so that the housing and the insert extend at least in part past the bracket and outside the surface of the wall, floor, or ceiling in the installed state, wherein the plurality of sections comprises a plurality of elevations and a plurality of valleys, and wherein the elevations and the valleys extend along a longitudinal axis from a front to a back of each section, and along a radial axis from an outer portion toward a central portion of each section.

19 . The fire-protection apparatus of claim 18 , wherein the plurality of elevations and the plurality of valleys slope in an axial direction and/or in a radial direction.

Assignees

• Hilti Ag

Inventors

• Vandertook Joshua
• Münzenberger Herbert
• Sarg Tamara
• Stroike Chad
• Schwaiger Lukas
• Akhil Kejriwal

Classifications

• F16J15/065

  fire resistant · CPC title

• A62C2/065 Primary

  having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent · CPC title

• H02G3/22

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

• F16L5/04

  to form a firebreak device · CPC title

• F16L5/10 Primary

  by using sealing rings or sleeves only · CPC title