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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0016654 (1979-03-01) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 5 인용 특허 : 2 |
A fail-safe-open actuator for actuating valves and the like which comprises a pair of opposed cylinders joined to define piston chambers, the axes of which are generally perpendicular to a valve stem. Pistons in the cylinders are connected to the valve stem by toggle links, the pistons being resilie
A fail-safe-open valve operator comprising: a pair of opposed cylinders joined together; a piston in each cylinder and each defining with its cylinder a piston chamber located at opposed ends of said joined cylinders; said pistons being movable between a normal position spaced from each other corres
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