|국가/구분||United States(US) Patent 등록|
|§371/§102 date||20000815 (20000815)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 30 인용 특허 : 6|
In a device for shutting off the flow of a fluid through a duct, preferably in a system for filtering drinking water, means for shutting off the duct comprise at least one obturator (14,22,35,43) disposed over a corresponding orifice (11) of the duct and means (15,23,36) for restraining the obturator (14,22,35,43) in a position such that the corresponding orifice (11) is not shut off, the restraining means being exposed to the flow of fluid through the duct and being able to undergo a change of state consequent upon the period of exposure to the flow in ...
1. If A water filter cartridge comprising a container having a first chamber having an inlet end and an outlet end, a supply of filtering material disposed in said first chamber, a second chamber defined between two permeable walls one of which is adjacent the outlet end of said first chamber and a shut-off means for controlling the flow of water through the second chamber, said shut-off means comprising at least one capsule disposed in the second chamber and comprised of a center portion of a material expandable upon contact with water and an outer shel...