Patent · US Active

Fire stop system

US8833478B2 · kind B2 · utility

21Cited by

43References

11Claims

0Family size

Assignee

Panduit Corp. · US

Inventors

Gary L. Zernach · Cumming, US
Joseph Allen Dukes · Dawsonville, US
Travis M. Samples · Dawsonville, US
Scott M. Younghouse · Cumming, US
Nathan W. Pascarella · Buford, US
John G. Duffield · Flowery Branch, US

Key dates

Filing date	Jul 7, 2011
Grant date	Sep 16, 2014
Priority date	—
Expiry date	Jul 11, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02G3/22
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A fire stop system with a pass through device is installed in a structural opening. The fire stop system includes a split pipe, a foam wall gasket and an annulus plate. The split pipe includes a first end and a second end. The first end and the second end have an intumescent material installed thereon to seal the split pipe when the split pipe is exposed to elevated temperatures. The foam wall gasket is installed around the split pipe adjacent the structural opening. The foam wall gasket forms a contour to the structural opening blocking air flow between the split pipe and the opening. The annulus plate covers the foam wall gasket and is installed around the split pipe at the structural opening.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.