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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0115304 (1980-01-24) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 6 인용 특허 : 1 |
A compact valve actuator for operating a valve of the butterfly type or the like. The actuator comprises a pair of joined pistons which respond by simultaneous reciprocation to introduction of operating fluid such as air into the actuator. Means such as a linkage for connecting the actuator to a val
Valve actuator comprising means adapted to operatively connect said actuator to an actuated valve, a housing having high and low pressure operating fluid inlets thereto, first and second pistons disposed in said housing and adapted to drive said connecting means; said first piston pressurized by low
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