Passthrough device with firestop

• US 5,390,465 A
• Filed: 09/03/1993
• Issued: 02/21/1995
• 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: Rajecki, James A.
• Primary Examiner(s): Safavi, Michael
• Assistant Examiner(s): COGGINS, WYNN WOOD
• Application Number:
  US08/116,719
• Time in Patent Office: 536 Days
• Field of Search: 285/211, 52/232, 52/741.1, 52/741.3, 52/741.4, 52/220.8, 52/220.1
• US Class Current: 52/741.3
• 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 device for installation in a building wall or floor to provide a passthrough opening for pipes, tubing, and the like includes an axially open first end and a second end closed by a transverse wall. A ring of intumescent material fills the axially open first end of the housing, and in one embodiment, a foam plastic filler material substantially fills the housing between the intumescent ring and the transverse wall. The intumescent ring can be provided with a central opening sized to engage with an interference fit a tube or pipe passing through the device. Alternatively, the ring can support a tube coupling for providing a tubular connection within the device to receive and couple pipes on opposite sides of the building wall or floor in which the device is installed.

Claims

1. A method of installing a plastic pipe of diameter d to extend through a building partition comprising:

a) providing a tubular sleeve member having a first section of internal diameter d1 which is greater than d, one end of the first section being closed and the other end having a radially outwardly extending cylindrical open ended flanged collar of a diameter d2 substantially greater than d joined axially thereto;

b) filling the collar with a solid intumescent material to form a solid ring of intumescent material axially aligned with the tubular sleeve, the center of the ring having a circular opening therethrough of a diameter only slightly less than d;

c) mounting the tubular sleeve member to extend through the building partition; and

,

d) cutting off the closed end of the tubular sleeve and installing a plastic pipe of diameter d through the tubular sleeve by forcing the pipe axially through the center circular opening of the ring of intumescent material in interference fit relationship therewith.

2. The method as set forth in claim 1 wherein the tubular sleeve member is formed of plastic and is positioned to extend through the building partition during the original construction of the building.

3. The method as set forth in claim 1 wherein the ring of intumescent material has an outer diameter substantial equal to d2.

4. A method of forming a firestop passthrough opening for a pipe of diameter d through a building partition comprising:

a) providing a tubular sleeve member having a first section of internal diameter d1 which is greater than d, one end of the sleeve being closed and the other end having a radially outwardly extending cylindrical open ended flanged collar of a diameter d2 substantially greater than d1 joined axially thereto;

b) filling the collar with a solid intumescent material bonded therein to form a solid ring of intumescent material axially aligned with the tubular sleeve, the center of the ring having a circular opening therethrough of a diameter slightly less than d;

c) mounting the tubular sleeve to extend through the building partition with the closed end of the sleeve spaced outwardly from the partition and the collar located within the partition and closely enclosed about its outer surface; and

,

d) cutting off the closed end of the tubular sleeve and inserting a plastic pipe of diameter d through the center circular opening of the ring of intumescent material in interference fit therewith.