Fire prevention sleeve

• US 9,121,527 B2
• Filed: 06/29/2012
• Issued: 09/01/2015
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Original Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Inventors: Munzenberger, Herbert, Drexl, Michael
• Primary Examiner(s): Jonaitis, Justin
• Assistant Examiner(s): Barrera, Juan C
• Application Number:
  US13/538,453
• Publication Number:
  US 20130161030A1
• Time in Patent Office: 1,159 Days
• Field of Search: 169/48, 138/110, 138/128, 138/159, 138/167, 138/106, 138/107, 138/149
• US Class Current: 1/1
• CPC Class Codes: A62C 2/065 having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
• CPC Class Codes: A62C 3/16 in electrical installations, e.g. cableways
• CPC Class Codes: F16L 5/04 to form a firebreak device

Abstract

A fire prevention sleeve that may be fastened at a wall or ceiling for sealing lines passing through walls or ceilings with an intumescent fire prevention insert, a wall mount encompassing the fire prevention insert, with the fire prevention insert being arranged at its interior, and at least one fastening part projecting radially outwardly in the area of at least one facial side of the wall mount, characterized in that the intumescent fire prevention insert is formed by an elastically deformable molded body, completely filling out the intumescent insert as a space encompassed by the housing.

Claims

1. A fire prevention sleeve for sealing lines and/or cables guided through a wall or ceiling, said fire prevention sleeve comprising:

an intumescent fire prevention insert;

a wall mount defining a tubular sleeve having a base end associated with the wall or ceiling and a distal end opposite the base end, wherein the tubular sleeve is configured to surround the intumescent fire prevention insert when inserted in the tubular sleeve; and

at least one fastening part projecting radially outward from at least one face of the wall mount proximate the base end of the tubular sleeve,

wherein the intumescent fire prevention insert comprises an elastically-deformable, molded body that fills an interior of the tubular sleeve when placed in the tubular sleeve,

wherein the elastically-deformable, molded body comprises a base end associated with the base end of the tubular sleeve and a flange extending radially outward from the base end of the elastically-deformable, molded body,

wherein the elastically-deformable, molded body further comprises a notching toward the base end of the elastically-deformable, molded body that extends circumferentially around the elastically-deformable, molded body to form the flange with an outer diameter equivalent to at least an outer diameter of the elastically-deformable, molded body, and

wherein a plurality of latches, projecting radially inwardly, are arranged along a circumference of the wall mount toward the base end of the tubular sleeve and are arranged to engage into the notching of the elastically-deformable, molded body.

2. The fire prevention sleeve of claim 1, wherein the elastically-deformable, molded body is embodied as a solid, cylindrically-shaped, molded body.

3. The fire prevention sleeve of claim 1, further comprising another plurality of latches, projecting radially inwardly, wherein the other plurality of latches are arranged along a circumference of the wall mount toward the distal end of the tubular sleeve and are further arranged to prevent a distal end of the intumescent fire prevention from sliding beyond the distal end of the tubular sleeve.

4. The fire prevention sleeve of claim 1, wherein the elastically-deformable, molded body has a height that is greater than a height of the tubular sleeve of the wall mount so that a base end of the elastically-deformable, molded body projects beyond the base end of the tubular sleeve when a distal end of the elastically deformable molded body aligns with the distal end of the tubular sleeve.

5. The fire prevention sleeve of claim 1, wherein the flange has an outer diameter that is at least equivalent to an exterior diameter of the wall mount.

6. The fire prevention sleeve of claim 1, wherein the flange has a thickness that is selected such that the flange is compressed between the at least one fastening part and the wall and/or ceiling when the wall mount is used to fasten the intumescent fire prevention insert to the wall or ceiling.

7. A fire prevention sleeve for sealing lines and/or cables guided through a wall or ceiling, said fire prevention sleeve comprising:

a wall mount defining an interior space between a base end associated with a wall or ceiling and a distal end opposite the base end;

at least one fastening part projecting radially outward from the wall mount proximate the base end and configured to affix the wall mount to the wall or ceiling; and

an intumescent fire prevention insert comprising a solid, elastically-deformable, molded body sized to fill the interior space of the wall mount when placed in the wall mount, wherein;

the intumescent fire prevention insert further comprises a notching that extends circumferentially around the solid, elastically-deformable, molded body; and

the wall mount further comprises a plurality of latches that project radially inwardly into the interior space and are arranged to engage into the notching of the intumescent fire prevention insert.

8. The fire prevention sleeve of claim 7, wherein the solid, elastically-deformable, molded body is embodied as a solid, cylindrically-shaped, molded body.

9. The fire prevention sleeve of claim 7, wherein the elastically deformable molded body has a height that is greater than a height of the wall mount so that a base end of the solid, elastically-deformable, molded body projects beyond the base end of the wall mount when a distal end of the solid, elastically-deformable, molded body aligns with the distal end of the wall mount.

10. The fire prevention sleeve of claim 7, wherein the solid, elastically-deformable, molded body comprises a base end associated with the base end of the wall mount and a flange extending radially outward from the base end of the solid, elastically-deformable, molded body.

11. The fire prevention sleeve of claim 10, wherein the notching extends circumferentially around the solid, elastically-deformable, molded body to form the flange with an outer diameter equivalent to at least an outer diameter of the solid, elastically-deformable, molded body.

12. The fire prevention sleeve of claim 7, wherein the wall mount comprises a first element pivotally coupled to a second element, wherein the first element and the second element, when in a closed position, form a tubular sleeve encompassing the interior space between the base end and distal end of the wall mount.

13. The fire prevention sleeve of claim 12, wherein the wall mount further comprises a closure and tension screw configured to stress the wall mount about the solid, elastically-deformable, molded body of the intumescent fire prevention insert.