Line conduit

Patent metadata

Field	Value
Publication number	US-9580921-B2
Application number	US-201314417100-A
Country	US
Kind code	B2
Filing date	Jul 23, 2013
Priority date	Jul 26, 2012
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A line conduit ( 10 ) to be cast into a structural element ( 12 ), especially a floor/ceiling and/or wall made of concrete, including an elongated housing ( 18 ) that has a holding space ( 25 ) for at least one line ( 16 ). The space is continuous in the lengthwise direction (L), and includes a fire-protection element ( 26 ) made of an intumescent material that is arranged around the inner wall of the housing ( 18 ) in the circumferential direction, whereby at least one anchoring element ( 34 ) is provided on the inner wall of the housing ( 18 ), the element being anchored inside the fire-protection element ( 26 ).

First claim

What is claimed is:

1. A line conduit to be cast into a structural element made of concrete, comprising:
an elongated housing to be cast into the structural element for contact with the structural element and having a holding space for at least one line passing through the elongated housing, said holding space being continuous in the lengthwise direction, the housing having an inner wall;
a fire-protection element made of an intumescent material and arranged around the inner wall of the housing in the circumferential direction; and
at least one anchoring element provided on the inner wall of the housing, said element being anchored inside the fire-protection element.

2. The line conduit as recited in claim 1 wherein the at least one anchoring element is arranged, at least in certain sections, in the lengthwise direction of the housing.

3. The line conduit as recited in claim 1 wherein the housing has two sections with an essentially constant cross section, the fire-protection element being arranged between the two sections.

4. The line conduit as recited in claim 3 wherein the anchoring element projects from a first or second section of the two sections in the lengthwise direction and extends into the fire-protection element.

5. The line conduit as recited in claim 4 wherein the anchoring element is part of the first or second section and extends into the fire-protection element.

6. The line conduit as recited in claim 3 wherein between the two sections, the housing has a holding section, the fire-protection element being accommodated in the holding section.

7. The line conduit as recited in claim 6 wherein the holding section is made of metal.

8. The line conduit as recited in claim 6 wherein in the area of the holding section, the housing widens perpendicular to the lengthwise direction.

9. The line conduit as recited in claim 8 wherein the housing is configured so as to be cylindrical, at least in certain sections.

10. The line conduit as recited in claim 4 further comprising a flange projecting radially on the first or second section.

11. The line conduit as recited in claim 3 further comprising fastening devices on a first or second section of the two sections for installation in formwork or in a structural element.

12. The line conduit as recited in claim 1 further comprising closure elements on the housing for purposes of closing the holding space in the lengthwise direction.

13. A line conduit as recited in claim 1 wherein the anchoring element is at least partially made of plastic.

14. A method for installing the line conduit as recited in claim 1 comprising casting the line conduit into the structural element.

15. The line conduit as recited in claim 1 wherein the elongated housing is cylindrical.

16. The line conduit as recited in claim 1 wherein the elongated housing has a first cylindrical section and a second cylindrical section having similar cross sections, the first and second cylindrical sections being axially spaced from each other.

17. The line conduit as recited in claim 1 wherein the elongated housing has a circumferentially widened holding section between the first and second cylindrical sections.

Assignees

• Hilti Ag

Inventors

• Muenzenberger Herbert

Classifications

• F16L5/04 Primary

  to form a firebreak device · CPC title

• E04B1/947

  by closing openings in walls or the like in the case of fire (fire-proof doors E06B5/16) · CPC title

• H02G3/22

  Installations of cables or lines through walls, floors or ceilings, e.g. into buildings · CPC title

• E04B5/36

  with form units as part of the floor · CPC title

• E04B2103/02

  of ceramics, concrete or other stone-like material · CPC title