Fire stop sleeve, partition provided with fire stop sleeve and method for installation for stop sleeve
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United States of America Patent
Stats
-
Jan 22, 2019
Grant Date -
Jul 20, 2017
app pub date -
Jul 6, 2015
filing date -
Jul 17, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A partition is penetrated by a duct. The partition has a passage through which the duct passes. A fire stop sleeve is positioned in the passage and arranged around the duct. The fire stop sleeve includes a casing having a tubular form and one or more elements of intumescent material arranged on a side of the casing facing the duct. The casing is provided with at least one movable retaining member which lies within an outer contour of the casing. The movable retaining member is actuable by intumescent material such that, in the occasion that swelling of the intumescent material occurs, the retaining member is moved radially outward towards engagement with a passage wall in the partition so as to retain the sleeve in the passage.
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