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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0757820 (1991-09-11) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 12 인용 특허 : 0 |
A vacuum valve that forms a tight vacuum seal is disclosed. The valve incorporates a hollow, malleable, metallic O-ring that deforms and conforms readily under pressure to seal the space between a movable valve member and a valve seat. When the valve is closed, the O-ring is compressed between oppos
A valve comprising: a housing having an inlet and an outlet; means defining a valve seat in the housing between the inlet and the outlet; and a valve seal assembly movable in the housing between an open position wherein the seal assembly is spaced from the valve seat allowing gas flow between the in
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