Cable tray firestop device

Abstract

A firestopping apparatus including a housing defined by first and second housing members. Each housing member includes a width direction wall panel and a height direction wall panel. The width direction wall panel of the first housing member is configured to connect with the height direction wall panel of the second housing member and the width direction wall panel of the second housing member is configured to connect with the height direction wall panel of the first housing member to define an assembled housing with a through passage. Intumescent material is positioned along an inner surface of each wall panel. A compressible foam is positioned within the intumescent material and substantially closes off the through passage.

What is claimed is: 
     
         1 . A firestopping apparatus comprising:
 a housing defined by first and second housing members, each housing member including a width direction wall panel and a height direction wall panel wherein the width direction wall panel of the first housing member is configured to connect with the height direction wall panel of the second housing member and the width direction wall panel of the second housing member is configured to connect with the height direction wall panel of the first housing member to define an assembled housing with a through passage;   intumescent material positioned along an inner surface of each wall panel; and   a compressible foam positioned within the intumescent material and substantially closing off the through passage.   
     
     
         2 . The firestopping apparatus according to  claim 1  wherein an elastomeric membrane extends along at least a front surface of the compressible foam. 
     
     
         3 . The firestopping apparatus according to  claim 2  wherein the elastomeric membrane includes a plurality of slits in the height direction. 
     
     
         4 . The firestopping apparatus according to  claim 3  wherein the slits extend inward from a lower edge of the elastomeric membrane. 
     
     
         5 . The firestopping apparatus of  claim 2  wherein an elastomeric membrane extends along a rear surface of the compressible foam. 
     
     
         6 . The firestopping apparatus according to  claim 1  wherein the compressible foam is made from a fire retardant material. 
     
     
         7 . The firestopping apparatus according to  claim 1  wherein the compressible foam includes more than one compressible foam pads positioned adjacent to one another. 
     
     
         8 . The firestopping apparatus according to  claim 1  wherein each of the width direction wall panels is adjustable in length. 
     
     
         9 . The firestopping apparatus according to  claim 8  wherein the intumescent material and the compressible foam may be reduced in length to complement the adjusted length of the width direction wall panels. 
     
     
         10 . The firestopping apparatus according to  claim 1  wherein a first tab and slot connection extends between the width direction wall panel of the first housing member and the height direction wall panel of the second housing member and a second tab and slot connection extends between the width direction wall panel of the second housing member and the height direction wall panel of the first housing member. 
     
     
         11 . The firestopping apparatus according to  claim 1  wherein the first and second housing members each define a ground screw hole. 
     
     
         12 . The firestopping apparatus according to  claim 1  wherein a plurality of mounting tabs extend from the housing. 
     
     
         13 . The firestopping apparatus according to  claim 12  wherein the position of at least one of the mounting tabs is adjustable. 
     
     
         14 . A firestopping assembly comprising:
 a firestopping apparatus including:
 a housing having a maximum height and a maximum width, the housing defined by first and second housing members, each housing member including a width direction wall panel and a height direction wall panel wherein the width direction wall panel of the first housing member is configured to connect with the height direction wall panel of the second housing member and the width direction wall panel of the second housing member is configured to connect with the height direction wall panel of the first housing member to define an assembled housing with a through passage having a given area; 
 intumescent material positioned along an inner surface of each wall panel; and 
 a compressible foam positioned within the intumescent material and substantially closing off the through passage; and 
   a closure plate including a perimeter structure defined about a through slot, the perimeter structure having height greater than the maximum height and a width greater than the maximum width and the through slot having an area equal to or less than the given area,   wherein the housing is configured to be mounted to the closure plate with the through passage aligned with the through slot and the perimeter structure extending outwardly from the housing.   
     
     
         15 . The firestopping assembly according to  claim 14  wherein at least one gasket member is positioned on the perimeter structure such that it extends between the perimeter structure and the housing. 
     
     
         16 . The firestopping assembly according to  claim 15  wherein the at least one gasket member includes an intumescent material. 
     
     
         17 . The firestopping assembly according to  claim 15  wherein the at least one gasket member extends along at least a portion of the through slot. 
     
     
         18 . The firestopping assembly according to  claim 14  wherein the closure plate is defined by a pair of U-shaped plate members. 
     
     
         19 . The firestopping assembly according to  claim 18  wherein one or both of the U-shaped plate members may be cut to adjust the width of the perimeter structure. 
     
     
         20 . The firestopping assembly according to  claim 14  wherein each of the width direction wall panels is adjustable in length.