FIRE PROTECTION COLLAR

• US 20150251028A1
• Filed: 10/08/2013
• Published: 09/10/2015
• Est. Priority Date: 10/11/2012
• Status: Active Grant

• Current Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Original Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Inventors: Klein, Manfred, Mordau, Ulf
• Granted Patent: US 9,586,066 B2
• Time in Patent Office: Days
• 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: F16L 5/04 to form a firebreak device
• CPC Class Codes: H02G 3/0412 Heat or fire protective means for fire in electric circuits A62C3/16

Abstract

A fire protection collar which can be installed on a wall or ceiling, for the purpose of sealing off conduits which pass through walls or ceilings, having an intumescent fire protection insert, a cladding part which surrounds the fire protection insert, wherein the fire protection insert is arranged on the inner side thereof, and at least one fastening part which protrudes radially outward from at least one end face of the cladding part, is characterized in that the intumescent fire protection insert is designed as a molded body which yields to deformation, which entirely fills in the space encompassed by the housing, and which is a two-piece component formed from two elements.

Claims

1. A fire protection collar, comprising:

an intumescent fire protection insert a first molded body piece and a second molded body piece;

a cladding part comprising a first cladding portion and a second cladding portion that are configured to surround the intumescent fire protection insert when arranged on an inner surface of the first cladding portion and the second cladding portion, wherein;

the first cladding portion and the second cladding portion each include at least one fastening part that protrudes radially outward from at least one end face of the respective cladding portion part; and

the first molded body piece and the second molded body piece each yield to deformation and together fill a space encompassed by the first cladding portion and the second cladding portion.

2. The fire protection collar of claim 1, wherein the first molded body piece and the second molded body piece form one of a cube, a cuboid, a prism, and a cylinder.

3. The fire protection collar of claim 1, wherein:

the first molded body piece forms a first half cylinder element;

the second molded body piece forms a second half cylinder element; and

the first molded body piece and the second molded body piece together form a cylinder.

4. The fire protection collar of claim 1, wherein a first contact surface of the first molded body piece is structured to engage a second contact surface of the second molded body piece.

5. The fire protection collar of claim 4, the first and second structured surfaces are formed by protruding elements having a regular arrangement.

6. The fire protection collar of claim 5, the wherein each protruding element have the same geometries and dimensions.

7. The fire protection collar of claim 6, the wherein each protruding element has one of a pyramid shape, a cone shape, a hemisphere shape, and a knob shape.

8. The fire protection collar of claim 5, wherein each protruding element the same height.

9. The fire protection collar of claim 5, heights of the protruding elements are alternatingly different.

10. The fire protection collar of claim 9, wherein the protruding elements are between 5 mm and 50 mm high.

11. The fire protection collar of claim 4, wherein the first and second structured surfaces are complementary to each other.

12. The fire protection collar of claim 1, wherein the first cladding piece and the second cladding piece each include a plurality of lugs that protrude radially inward along along a circumferential line of the respective first and second cladding piece.

13. The fire protection collar of claim 12, wherein the plurality of lugs are arranged along the circumferential line that is associated with a surface to which the fire protection collar is attached.

14. The fire protection collar of claim 1, wherein a height of the molded body is greater than a height of the cladding part such that the molded body projects beyond the cladding part.

15. The fire protection collar of claim 1, wherein a base surface of the molded body that faces a surface to which the fire protection collar is attached comprises the wall or ceiling has a flange that runs at a right angle to the molded body.

16. The fire protection collar of claim 15, according to one of the claims 1 to 14, characterized in that the molded body (12′

) has a flange (14′

) on the base surface which faces the wall or ceiling, wherein the flange is formed by an indentation that runs along a periphery of the molded body such that a diameter of the flange is at least as large as a diameter of the molded body.

17. The fire protection collar of claim 15, wherein a diameter of the flange is at least as large as an outer diameter of the cladding part.

18. The fire protection collar of claim 15, wherein a thickness of the flange permits attaching the fire protection collar to a surface.

19. fire protection collar of claim 12, wherein the plurality of lugs which protrude radially inward engage in an indentation of the molded body that forms a flange.