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Intumescable fire stop device

  • US 5,103,609 A
  • Filed: 11/15/1990
  • Issued: 04/14/1992
  • Est. Priority Date: 11/15/1990
  • Status: Expired due to Fees
First Claim
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1. An intumescable fire stop device which has a collar that supports an intumescent material about a section of a pipe, such that when the intumescent material becomes sufficiently heated it expands to close off the section of the pipe and create a fire stop barrier along the pipe, the improvement which comprises:

  • a plurality of heat conducting tabs arranged about the collar, the tabs projecting toward the pipe and into the intumescent material, for channeling heat into the interior of the intumescent material so that the intumescent material expands quickly and uniformly, the collar including first and second interlocking ends such that the first interlocking end cooperates with the second interlocking end to secure the collar about the section of the pipe, the collar being sufficiently flexible to allow the first and second interlocking ends to be spread apart for installation of the collar about the section of the pipe.

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