Passthrough device with firestop

• US 5,417,019 A
• Filed: 03/11/1993
• Issued: 05/23/1995
• Est. Priority Date: 03/11/1993
• Status: Expired due to Fees

• Current Assignee: Lamson & Sessions Company (ABB Limited)
• Original Assignee: Lamson & Sessions Company (ABB Limited)
• Inventors: Marshall, David P., Rajecki, James A.
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): COGGINS, WYNN WOOD
• Application Number:
  US08/029,685
• Time in Patent Office: 803 Days
• Field of Search: 52/232, 52/220.8
• US Class Current: 52/232
• 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

Abstract

A coupling device for installation in a building wall or floor to provide a passthrough opening for pipes, tubing, and the like comprises an axially elongated, plastic tubular housing with a radially extending mounting flange and having open first end and a second end which is closed by a transverse wall. At least one tubular coupling element having an entrance end and an exit end is positioned within the housing to extend axially thereof with the entrance end of the coupling opening to the first end of the housing. Intumescent firestop material surrounds the coupling element and fills the space between the coupling element and the outer housing. A tube member extends from the coupling element to the second end of the housing. After the coupling device is installed, the second end of the housing is cut away at the surface level of the partition to expose the tube member for connection to the associated piping system.

Claims

1. A coupling device for installation in a building partition to provide a passthrough for conduits, pipes, and the like, said device comprising:

an axially elongated tubular outer housing formed of plastic and having first and second ends with the first end open and the second end closed by a transversely extending wall;

a laterally extending flange means extending outwardly from the housing for mounting the housing in an opening extending through the partition;

at least one tubular pipe coupling element having an entrance end and an exit end is positioned within the housing to extend axially thereof with the entrance end of the coupling facing toward the first end of the housing;

an intumescent firestop material surrounding said coupling element and generally filling the space between the coupling element and the outer housing; and

,

a tube member extending from the coupling element to the second end of the housing.

2. The coupling device as defined in claim 1 wherein the tube member extending from the coupling element extends substantially to the transversely extending wall.

3. The coupling device as defined in claim 2 including a solid filler material surrounding said tube member and substantially filling the space between the intumescent firestop material and the transverse wall.

4. The coupling device as defined in claim 3 wherein the tubular pipe coupling element has a cylindrical entrance end with a seal means positioned therein for sealingly engaging the exterior of a pipe inserted into said coupling while permitting free axial sliding movement of the pipe.

5. The coupling device as defined in claim 4 wherein there are a plurality of tubular coupling elements mounted within the tubular housing to extend axially thereof.

6. The coupling device as defined in claim 4 wherein the tubular outer housing is formed of plastics material and wherein the second end is closed by a transverse wall.

7. The coupling device as defined in claim 5 wherein the tubular outer housing is generally cylindrical and solid filler material fills the space between the transversely extending end wall and the intumescent firestop material.

8. The coupling device as defined in claim 7 wherein the laterally extending flange means is located closely adjacent the open first end of the tubular outer housing.

9. The coupling device as defined in claim 5 wherein all of the tubular coupling elements extend parallel to the axis of the tubular outer housing.

10. The coupling device as defined in claim 7 wherein the solid filler material is a foam plastic and is readily removable from the tubular outer housing.

11. The coupling device as defined in claim 7 including a metal plate member joined to the open first end of the tubular outer housing, said plate member having at least one central open area corresponding to the locations of the entrance ends of the pipe coupling elements to allow free access thereto.

12. The coupling device as defined in claim 11 wherein the metal plate member has peripheral edge portions extending laterally beyond the open end of the tubular outer housing.

13. The coupling device as defined in claim 11 wherein the metal plate member is joined to the open first end of the tubular outer housing by fasteners extending into the intumescent firestop material.

14. The coupling device as defined in claim 13 wherein the fasteners are integral portions of the metal plate.

15. The coupling device as defined in claim 13 wherein the transverse end wall is formed integrally with the tubular outer housing.

16. A coupling device for installation in a building partition to provide a passthrough for pipes, tubing, and the like, said device comprising:

an axially elongated tubular outer housing having first and second ends with the first end open and the second end closed by a transverse wall;

a laterally extending flange means for mounting the housing in an opening extending through the partition;

at least one tubular coupling element having an entrance end and an exit end and positioned within the housing to extend axially thereof with the entrance end of the coupling facing toward the first end of the housing;

an intumescent firestop material surrounding said coupling element and generally filling the spaced between the coupling element and the outer housing; and

,

a tube member extending from the coupling element to the second end of the housing.

17. The coupling device as defined in claim 16 wherein the tubular outer housing comprises a one piece body formed of plastics material and the tube member extending from the coupling element extends substantially to the transverse wall.

18. The coupling device as defined in claim 17 including a filler material surrounding said tube member and substantially filling the space between the intumescent firestop material and the transverse wall.

19. The coupling device as defined in claim 18 wherein the tubular pipe coupling element has a cylindrical entrance end with a seal means positioned therein for sealingly engaging the exterior of a pipe inserted into said coupling element while permitting free axial sliding movement of the pipe.