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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0488064 (1983-04-25) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 59 인용 특허 : 3 |
A valve operator having a piston or diaphragm and connected polygonal piston rod which supplies reciprocable motion to a key or follower which acts within a spiraled slot formed in a coupling member attached to a valve gate to rotate the valve gate to a desired angular position. One embodiment inclu
A valve having a valve body with a fluid passageway therethrough and a valve gate member rotatably positioned in said passageway, said gate member adaptable to close said passageway and to open said passageway when rotated to a different angular position, a stem member to which said gate member is s
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