Static structures (e.g. – buildings) – Irreversibly reactive component
Patent
1990-11-15
1992-04-14
Murtagh, John E.
Static structures (e.g., buildings)
Irreversibly reactive component
F16L 502
Patent
active
051036096
ABSTRACT:
An intumescable fire stop device that is easy to install and effectively and efficiency channels heat to an intumescent material so that the intumescent material expands quickly and uniformly includes a collar. An inner surface of the collar has a plurality of heat conducting tabs that extend outwardly and secure the intumescent material to the collar. The heat conducting tabs extend into the intumescent material and thereby effectively channel heat from a fire into the interior regions of the intumescent material so that the intumescent material expands quickly and uniformly. The collar further includes a first interlocking end having a plurality of spaced openings. The spaced openings are configured to receive spaced fingers on a second interlocking end of the collar. The interengagement of the fingers and openings allows the collar to be firmly secured about a section of a pipe. The collar has a plurality of releasibly secured Z-shaped mounting clips. The mounting clips are used to secure the collar to a firm, structural surface such as a wall or ceiling having an opening through which the pipe passes.
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Minneasota Mining and Manufacturing Corp., Fire Barrier RC-1 Restricting Collar, 2 pages.
McCurdy, deceased Robert C.
Thoreson Thomas L.
Minnesota & Mining Manufacturing Company
Murtagh John E.
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