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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0587672 (1975-06-17) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 8 인용 특허 : 0 |
A drain closure assembly including a resilient, dome-shaped plug member which may be changed from stable “closed”convex configuration to a stable “open”concave configuration by applying pressure to either an edge portion or a central portion of the plug member. The plug member is carried by a stem m
A drain closure assembly comprising: a socket member adapted to extend at least partially within the drain to be closed and defining a through opening for permitting a liquid to flow into said drain, said socket member including a sealing surface; a stopper member of a flexible material and having a
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