Fire protection sleeve

• US 10,415,725 B2
• Filed: 04/27/2016
• Issued: 09/17/2019
• Est. Priority Date: 04/27/2015
• Status: Active Grant

• Current Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Original Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Inventors: Muenzenberger, Herbert
• Primary Examiner(s): Demuren, Babajide A
• Application Number:
  US15/568,562
• Publication Number:
  US 20180112803A1
• Time in Patent Office: 1,238 Days
• 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
• CPC Class Codes: H02G 3/0412 Heat or fire protective means for fire in electric circuits A62C3/16
• CPC Class Codes: H02G 3/22 Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

Abstract

A firestop collar (10) for sealing of openings, especially of line penetrations (12), that pass through walls (11) or ceilings has a frame (16) and a block (20) of optionally intumescent material disposed therein, and is characterized in that an intumescent inlay (22) is disposed between the block (20) and the frame (16).

Claims

1. A firestop collar, comprising:

a frame comprising a plurality of portions extending in different directions, the plurality of portions comprising at least one side portion extending in a first direction and at feast one front portion extending from the at least one side portion in a second direction;

at least one block that comprises an intumescent material; and

an intumescent layer comprising at least one side portion extending in the first direction and at least one front portion extending from the at least one side portion of the intumescent layer in the second direction, the at least one side portion of the intumescent layer present between the at least one side portion of the frame and the at least one block and the at least one front portion of the intumescent layer present between the at least one front portion of the frame and the at least one block, wherein said intumescent layer and said block comprising the intumescent material are intumescent materials with different properties, wherein said intumescent layer and said block comprising the intumescent material are in direct physical contact with each other, and wherein the at least one block is exposed through a space between the at least one front portion and another front portion of the intumescent layer, the at least one block exposed in the first direction aligned with a hole passing through the at least one block to accommodate a building feature passing through a wall or ceiling.

2. The firestop collar according to claim 1, wherein the plurality of portions of the frame comprises:

a plurality of side portions that surround the block on a side rim of the block, and

a plurality of front portions extending perpendicularly relative to the plurality of side portions, and wherein the height of the block is greater than the height of the plurality of side portions.

3. The firestop collar according to claim 2, wherein the block is 2 to 6 mm higher than the side portions.

4. The firestop collar according to claim 1, wherein the block comprises a reinforcing inlay.

5. The firestop collar according to claim 4, wherein the reinforcing inlay is a mat, a mesh, or a fabric.

6. The firestop collar according to claim 4, wherein the reinforcing inlay comprises at least one of metal, glass fibers, basalt fibers, carbon fibers, and ceramic fibers.

7. The firestop collar according to claim 4, wherein the reinforcing inlay comprises expanded metal.

8. The firestop collar according to claim 2, wherein a plurality of fastening brackets is present on the side portions.

9. The firestop collar according to claim 1, wherein the block is a molded block.

10. The firestop collar according to claim 1, wherein the block is a molded block that comprises a foam material that is in the form of the molded block and present in the frame.

11. The firestop collar according to claim 1, wherein the frame is of modular construction.

12. The firestop collar according to claim 11, wherein the frame comprises a plurality of individual parts, which are joined to one another by a plug-shaped connector.

13. The firestop collar according to claim 11, wherein the frame is in the form of one continuous strip.

14. The firestop collar according to claim 13, wherein the frame is cut to a desired length and the end of which is joined to the beginning in such a way that the frame is formed.

15. The firestop collar according to claim 1, wherein said collar is suitable for sealing of openings that pass through walls or ceilings.

16. The firestop collar according to claim 1, wherein said collar is suitable for sealing of line penetrations that pass through walls or ceilings.

17. The firestop collar according to claim 1, wherein said intumescent layer and said block comprising the intumescent material are intumescent materials with different properties with respect to activation temperature and expansion behavior.

18. The firestop collar according to claim 1, wherein the intumescent layer is spaced from and not in contact with a hole passing through the at least one block to accommodate a building feature passing through a ceiling or wall.

19. A firestop collar, comprising:

a frame comprising a plurality of portions extending in different directions, the plurality of portions comprising at least one side portion extending in a first direction and at least one front portion extending from the at least one side portion in a second direction;

at least one block that comprises an intumescent material; and

an intumescent layer comprising at least one side portion extending in the first direction and at least one front portion extending from the at least one side portion of the intumescent layer in the second direction, the at least one side portion of the intumescent layer present between the at least one side portion of the frame and the at least one block and the at least one front portion of the intumescent layer present between the at least one front portion of the frame and the at least one block, wherein said intumescent layer and said block comprising the intumescent material are intumescent materials with different properties, wherein said intumescent layer and said block comprising the intumescent material are in direct physical contact with each other, and wherein;

the intumescent layer comprises a hole to accommodate a building feature passing through a wall or ceiling adjacent the frame,

the first direction is parallel to a direction in which the building feature passes through the wall or ceiling, and

the second direction crosses the direction in which the building feature passes through the wall or ceiling.