Fire protection sleeve

• US 9,145,987 B2
• Filed: 07/02/2013
• Issued: 09/29/2015
• Est. Priority Date: 07/03/2012
• 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): Fox, Charles A
• Assistant Examiner(s): SADLON, JOSEPH
• Application Number:
  US13/933,394
• Publication Number:
  US 20140007373A1
• Time in Patent Office: 819 Days
• Field of Search: 522/208, 522/32, 24/31.R, 24/35, 24/36, 244/58
• 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: F16B 15/0015 Staples
• 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 fire protection sleeve is disclosed. The fire protection sleeve has a carrier strip and an intumescent overlay, which runs on an inner surface along the carrier strip and is connected thereto. A plurality of recesses spaced apart from one another in a longitudinal direction are provided on the outer side of the carrier strip facing away from the intumescent overlay. The fire protection sleeve also has a closure clip, made in particular of a sheet, wherein the closure clip has at least two hooks that are able to engage in the recesses.

Claims

1. A fire protection sleeve, comprising:

a carrier strip, wherein the carrier strip includes a plurality of recesses spaced apart from one another in a longitudinal direction;

an intumescent overlay disposed on an inner surface of the carrier strip; and

a closure clip, wherein the closure clip has a base body and at least two hooks that are engagable in the recesses, wherein a respective receptacle for a tool is provided on each of the at least two hooks, and wherein the respective receptacle is formed by opposing edges of the respective hook which are bent towards each other and which form a pocket that is open in the longitudinal direction.

2. The fire protection sleeve according to claim 1, wherein the base body of the closure clip is a substantially flat base body and wherein, in a pre-assembly position, the hooks protrude substantially at a right angle from the base body.

3. The fire protection sleeve according to claim 1, wherein the base body of the closure clip is a substantially flat base body and wherein, in a final assembly position, the hooks are bent at an acute angle to the base body.

4. The fire protection sleeve according to claim 1, wherein the base body of the closure clip is a substantially flat base body and wherein, in a final assembly position, the hooks are bent approximately parallel to the base body.

5. The fire protection sleeve according to claim 1, wherein the receptacle runs parallel to a plane of the hook.

6. The fire protection sleeve according to claim 1, wherein the intumescent overlay is a yielding foam material at least in a region of the recesses.

7. The fire protection sleeve according to claim 1, wherein the intumescent overlay has at least one groove in a region of the recesses.

8. The fire protection sleeve according to claim 7, wherein the at least one groove extends through an entire thickness of the intumescent overlay and divides the intumescent overlay into a plurality of intumescent strips.

9. The fire protection sleeve according to claim 1, wherein the intumescent overlay has gaps running transverse to the longitudinal direction which define ribs therebetween.

10. The fire protection sleeve according to claim 1, further comprising a second intumescent overlay disposed on an outer surface of the carrier strip.

11. The fire protection sleeve according to claim 1, wherein the carrier strip is made of a metal or a plastic.