Patent ID: 7373761

Claim:
A self-adjusting intumescent firestopping apparatus for selectively sealing of an opening in a construction barrier having penetrating members extending therethrough comprising: A. a sleeve means securable to the construction barrier at a position extending through the opening defined therein for defining an access corridor means extending through the barrier, said sleeve means including a plurality of panel members which together define said access corridor means therebetween; B. a plate means extending along said panel members and movably attached with respect thereto, said plate means being positioned spatially disposed from said panel members, said plate means including an outer surface and an inner surface defined oppositely with respect to one another thereupon, said inner surface of said plate means along with said panel members defining said access corridor means therebetween; C. an intumescent sealing means attached with respect to said inner surface of said plate means, said intumescent sealing means being positioned within said access corridor means extending between said inner surface of said plate means and the penetrating means for abutting engagement therewith to facilitate sealing of said access corridor therearound, said intumescent sealing means further comprising: (1) a lower intumescent pad means positioned extending at least partially along said panel members within said access corridor means beneath the penetrating members; and (2) an upper intumescent pad means attached with respect to said inner surface of said plate means and movable therewithin, said upper intumescent pad means extending downwardly from said plate means into abutting engagement with respect to the penetrating members for sealing of said access corridor means above the penetrating members; and D. a flexibly resilient support means attached with respect to said outer surface of said plate means and positioned extending between at least one of said panel members and said outer surface of said plate means for facilitating flexibly resilient movable mounting of said plate means with respect to said sleeve means, said flexibly resilient support means adapted to exert force against said outer surface of said plate means to urge said inner surface of said plate means into abutment with respect to said intumescent sealing means for urging thereof into abutment with respect to penetrating members positioned extending through said access corridor means to facilitate sealing therearound.