发明名称 |
Retractable and expandable water cooled valve gate useful for sealing a hot processing chamber |
摘要 |
A pendulum gate valve including an expandable gate which pivots when unexpanded to selectively block a vacuum or other pressure-differential passage. The valve includes a valve plate sealing one side of the passage and a ring or barrier plate abutting an opposed side of the passage when the gate member is expanded. A compression spring biases apart the valve plate and ring to close the valve by means of respective two-stage hangers attached thereto, extending along the spring, and having distal ends capturing the spring. Pneumatic pressure applied to a pneumatic cavity formed between the middles of the two-stage hangers and accommodating the spring forces apart the valve plate and ring to open the valve in the blocking position. Thereby if pressure fails, the valve fails to a sealed state. The axially movable valve or barrier plate is advantageously water cooled to allow use with a heated processing chamber.
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申请公布号 |
US2011006236(A1) |
申请公布日期 |
2011.01.13 |
申请号 |
US20100788191 |
申请日期 |
2010.05.26 |
申请人 |
CONFLUENCE SOLAR, INCORPORATED |
发明人 |
WILLIAMS DICK S.;LUTER WILLIAM L. |
分类号 |
F16K1/18;F16K3/00 |
主分类号 |
F16K1/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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