Apparatus and method for sealing an opening in a fire partition through which a combustible conduit extends
First Claim
1. An apparatus for sealing a conduit opening or the like in a fire partition wherein an existing combustible conduit extends through the conduit opening, the apparatus including:
- a) a first non-combustible enclosure capable of being fastened to the fire partition on one side of the conduit opening, and having a first recess therein;
b) a second non-combustible enclosure capable of being fastened to the fire partition on a side of said conduit opening opposite said one side, the second non-combustible enclosure having a second recess therein, the first and second enclosures lying in a common plane and being pivotally connected together such that the first and second enclosures can be spread apart for installation over said existing conduit and closed together such that a recess-formed opening is defined about the conduit by the first and second recesses;
c) first and second shutter doors slidable in the first and second enclosures respectively, the first and second shutter doors being slidable between a first, open position in which the recess-formed opening is unobstructed by the shutter doors and a second, closed position in which the recess-formed opening is obstructed by the shutter doors;
d) urging means for urging the first and second shutter doors into the closed position when the combustible conduit is burned away due to fire.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for sealing an opening, or the like, in a fire partition through which an existing combustible conduit extends includes a first enclosure capable of being fastened to the fire partition on one side of the conduit opening and having a first recess therein. A second non-combustible enclosure capable of being fastened to the fire partition on a side of the conduit opening opposite the first enclosure, has a second recess therein and is hingedly connected to the first non-combustible enclosure. The first and second enclosures lie in a common plane and are operable, through the use of the hinged connection, to be spread apart for installation over the existing combustible conduit and can be closed together such that a recess-formed opening is defined about the conduit by the first and second recesses. First and second shutter doors are slidable in the first and second enclosures respectively, the first and second shutter doors being slidable between a first, open position in which the recess-formed opening is unobstructed by the shutter doors and a second, closed position in which the recess-formed opening is obstructed by the shutter doors. The first and second shutter doors are urged into the closed position such that the recess-defined opening is obstructed when the combustible conduit is burned away.
34 Citations
19 Claims
-
1. An apparatus for sealing a conduit opening or the like in a fire partition wherein an existing combustible conduit extends through the conduit opening, the apparatus including:
-
a) a first non-combustible enclosure capable of being fastened to the fire partition on one side of the conduit opening, and having a first recess therein; b) a second non-combustible enclosure capable of being fastened to the fire partition on a side of said conduit opening opposite said one side, the second non-combustible enclosure having a second recess therein, the first and second enclosures lying in a common plane and being pivotally connected together such that the first and second enclosures can be spread apart for installation over said existing conduit and closed together such that a recess-formed opening is defined about the conduit by the first and second recesses; c) first and second shutter doors slidable in the first and second enclosures respectively, the first and second shutter doors being slidable between a first, open position in which the recess-formed opening is unobstructed by the shutter doors and a second, closed position in which the recess-formed opening is obstructed by the shutter doors; d) urging means for urging the first and second shutter doors into the closed position when the combustible conduit is burned away due to fire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of sealing a conduit opening or the like in a fire partition wherein an existing combustible conduit extends through the conduit opening, the method including the steps of:
-
a) spreading apart first and second non-combustible hinge-connected enclosures containing first and second slidable shutter doors respectively; b) closing the first and second enclosures such that first and second recesses respectively therein are operable to define a recess-defined opening through which the combustible conduit extends; c) urging the first and second slidable shutter doors into a closed position in which the recess-defined opening is obstructed by the first and second shutter doors when the conduit is burned away from the opening due to heat from fire. - View Dependent Claims (11, 12)
-
-
13. An apparatus for sealing an opening in a fire partition wherein a combustible conduit extends through the opening, the apparatus including:
-
a) a first non-combustible rigid plate portion having a first semicircular recess therein; b) a second non-combustible rigid plate portion having a second semicircular recess therein, the first and second plate portions lying in a common plane and being pivotally connected together such that the first and second semicircular recesses are operable to be aligned to define a circular opening, the semicircular recesses being dimensioned such that the conduit is snugly received therebetween; c) first and second shutter doors slidable relative to the first and second plates respectively between a first open position in which the circular opening is unobstructed by the shutter doors and a second closed position in which the circular opening is completely obstructed by the shutter doors; d) first and second guide means on the first and second rigid plates respectively for guiding the movement of the first and second shutter doors respectively between the open and closed positions; e) urging means for urging the first and second shutter doors into the closed position such that the first and second shutter doors move into the closed position when the combustible conduit is burned away. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification