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특허 상세정보

Method and apparatus for firestopping around a water closet drain pipe in a vertical floor opening

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E04C-002/52    E04C-002/00    E04B-001/94   
미국특허분류(USC) 052/232; 052/220.8; 052/317; 174/048
출원번호 UP-0340906 (2006-01-26)
등록번호 US-7694474 (2010-05-20)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Sperry, Zoda & Kane
인용정보 피인용 횟수 : 2  인용 특허 : 55

A firestopping device which is held between the flange of water closet flange assembly and the floor surrounding the opening containing the drain pipe which includes a securement section positioned therebetween for being held in place and an intumescent section extending radially inwardly therefrom to a position above the vertical drain pipe opening to facilitate intumescent expansion thereinto responsive to the exposure of heat.


We claim: 1. An improved firestopping means being responsive to heating thereof for selectively sealing a vertical opening in a floor assembly having a drain pipe extending upwardly therewithin, the drain pipe being attachable to a water closet by a water closet flange assembly which includes a water closet flange means attachable to a water closet and a drain pipe engaging means attachable to the drain pipe, said improved firestopping means comprising: A. an outer securement section is positioned immediately above a generally horizontally extending upw...

이 특허에 인용된 특허 (55)

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