초록 ▼

A system and method for passing conduit through a wall so as to maintain a firebreak for the wall wherein a coupling having relatively low thermal conductivity properties and relatively high fire resistance properties is mounted in an opening in the wall and secured therein by thermal barrier sealin

A system and method for passing conduit through a wall so as to maintain a firebreak for the wall wherein a coupling having relatively low thermal conductivity properties and relatively high fire resistance properties is mounted in an opening in the wall and secured therein by thermal barrier sealing material and one end of a first conduit is inserted into a first side of the coupling and one end of a second conduit is inserted into a second side of the coupling and wherein the first and second conduits have relatively high thermal conductivity properties and wherein the one ends of the first and second conduits are located and maintained a distance from each other so as to provide a thermal barrier therebetween.

대표청구항 ▼

A system for passing conduit through a wall so as to maintain a firebreak for the wall comprising: wall means for separting one area from another area and providing a firebreak between said one area and said another area; opening means defining an opening extending through said wall means; a couplin

A system for passing conduit through a wall so as to maintain a firebreak for the wall comprising: wall means for separting one area from another area and providing a firebreak between said one area and said another area; opening means defining an opening extending through said wall means; a coupling mounted in said opening; said coupling formed from a material having a thermal conductivity less than 4.0 B.t.u. per hr-ft-deg F and a fire resistance rating in accordance with ASTM-Test E 814 of at least three hours; thermal barrier sealing means forming a seal between said opening means and said coupling; a first conduit having one end thereof located in a first side of said coupling; a second conduit having one end thereof located in a second side of said coupling; said first and second conduit formed from a metallic materail having relatively high thermal conductivity properties; separation means in said coupling for providing a positive space between said one ends of said first and second metallic conduits in said coupling; and retaining means for retaining said one ends of said first and second metallic conduits in said coupling means.