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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||251/65 ; 251/635 ; 355/306|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 18 인용 특허 : 3|
An automatic valve comprising a first cylindrical magnet as a part of a valve rod axially slidable in a valve chamber for opening and closing a valve port and a second cylindrical magnet as a part of a piston disposed around and coaxially with the first cylindrical magnet for magnetically actuating the valve member under pneumatic control, in which respective ring magnets constituting each of the first and the second cylindrical magnets are stacked such that identical magnetic poles are axially faced to each other increasing the magnetic attraction force...
An automatic valve comprising: a valve chamber having at least two fluid ports, including one at a top end thereof and another at a rear end thereof, and an inner circumferential wall surface between said ends thereof; a valve shaft contained in the valve chamber for sliding in the axial direction of said valve shaft and valve chamber, said valve shaft having a top end and a back end, and an outer circumferential wall surface between said ends thereof; said valve shaft having a valve body formed at said top end thereof for closing one of said fluid ports...