Fire Prevention Sleeve

• US 20130161030A1
• Filed: 06/29/2012
• Published: 06/27/2013
• 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
• Granted Patent: US 9,121,527 B2
• Time in Patent Office: Days
• US Class Current: 169/48
• 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 walls or ceilings, said fire prevention sleeve including:

an intumescent fire prevention insert;

a wall mount surrounding the fire prevention insert, with the fire prevention insert being arranged at its interior; and

at least one fastening part projecting radially outward in the area of at least one face of the wall mount,

wherein the intumescent fire prevention insert is embodied as an elastically deformable molded body entirely filling the space covered by the wall mount.

2. The fire prevention sleeve of claim 1 wherein the molded body is embodied cylindrically.

3. The fire prevention sleeve of claim 1 wherein several latches, projecting radially inwardly, are arranged along at least a perimeter line at the circumference of the wall mount.

4. The fire prevention sleeve of claim 3 wherein several latches, projecting radially inwardly, are arranged at least along the perimeter line at the circumference of the wall mount facing the wall or ceiling.

5. The fire prevention sleeve of claim 1 wherein the height of the molded body is greater than the width of the wall mount so that the molded body projects beyond the wall mount.

6. The fire prevention sleeve of claim 1 wherein the molded body comprises a flange extending perpendicular in reference to the molded body at the base area facing the wall or ceiling.

7. The fire prevention sleeve of claim 1 wherein the molded body comprises a flange at the basic area facing the wall or ceiling, with the flange being formed by a notching extending in the circumferential direction of the molded body so that the diameter (D′

) of the flange is equivalent to at least the diameter of the molded body.

8. The fire prevention sleeve of claim 6 wherein the diameter of the flange is at least equivalent to the exterior diameter of the wall mount.

9. The fire prevention sleeve of claim 6 wherein the thickness of the flange is selected such that the fire prevention sleeve may be assembled at the wall or ceiling without any problems.

10. The fire prevention sleeve of claim 4 wherein several latches, projecting radially inwardly, engage the notches of the molded body forming the flange.

11. The fire prevention sleeve of claim 7 wherein several latches, projecting radially inwardly, engage the notches of the molded body forming the flange.