发明名称 |
Low friction vacuum valve and drying apparatus |
摘要 |
A vacuum valve maintaining the simplicity of operation and reliability of a glass stopcock for large bore, low impedance vacuum procedures, such as continuous freeze drying. A rigid inner member, with friction reducing raised circumferential and longitudinal portions, is rotated within a clear elastomeric outer member to provide various vacuum connections.
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申请公布号 |
US4584781(A) |
申请公布日期 |
1986.04.29 |
申请号 |
US19850728525 |
申请日期 |
1985.04.29 |
申请人 |
PARKINSON, MARTIN |
发明人 |
PARKINSON, MARTIN C.;WILEY, GARY B. |
分类号 |
F16K11/085;F16K51/02;F26B5/04;F26B5/06;(IPC1-7):F26B13/30;E03B3/00;F26B21/06 |
主分类号 |
F16K11/085 |
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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