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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||222/491; 222/484; 222/490|
|§371/§102 date||20010717 (20010717)|
|발명자 / 주소||
|출원인 / 주소||
|대리인 / 주소||
|인용정보||피인용 횟수 : 12 인용 특허 : 4|
A slit closure valve for container openings includes a membrane member of flexible material having an at least unidirectionally aligned slit-like outlet opening and a base member peripherally surrounding the membrane member and connected to the membrane member. The outlet opening is held in its closed position by the resilient properties of the material although it is adapted to be moved into its open position against the resilient bias force of the material by a predetermined differential positive pressure exerted on one side of the membrane member. A p...
1. A slit closure valve, including a membrane member made of a flexible material and having a first slit opening, said first slit opening being held in a closed configuration by resilient properties of the flexible material and placed into an open configuration against the resilient properties of the flexible material by a predetermined differential positive pressure being exerted on one of opposite sides of the membrane member, and further including a base member peripherally surrounding the membrane member, said base and membrane members being integral...