Patent ID: 8833478
Filing Date: 2014-09-16
Classification: A62C,F16L,H02G

Abstract:
1. A fire stop system with a pass through device installed in a structural opening, the fire stop system comprising: a split pipe having a first end and a second end, wherein the first end and the second end have an intumescent material installed thereon for sealing the split pipe when exposed to elevated temperatures; a foam wall gasket installed around the split pipe adjacent the structural opening, wherein the foam wall gasket forms a contour to the structural opening blocking air flow between the split pipe and the opening; an annulus plate covering the foam wall gasket, wherein the annulus plate is positioned around the split pipe at the structural opening; and pie foam disks installed on the intumescent material at the first end and the second end of the split pipe, wherein the pie foam disks have a plurality of slits forming a plurality of triangular shaped sections.