发明名称 |
Methods and apparatus for forming an integral high pressure seal using mechanical actuation |
摘要 |
A cap for sealing pressure vessels is disclosed. The present invention permits a nominal closure to be formed by hand tightening and a substantially higher force to be applied to a cap by a separate clamp mechanism, thereby forming a pressure seal. In certain preferred embodiments, means for providing a process flow through a hole in the seal and filtering means are also provided as part of the cap assembly. A preferred application of the cap of the present invention is for the sealing of sample vessels used for supercritical fluid extraction of compounds from a solid matrix for subsequent chemical analysis. Methods of supercritical fluid extraction are also disclosed. The present invention thus provides methods and apparatus whereby the placement of a sample into a pressurized system may be automated and monitored to ensure adequate seals have been created and maintained within such pressurized systems.
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申请公布号 |
US5193703(A) |
申请公布日期 |
1993.03.16 |
申请号 |
US19920825450 |
申请日期 |
1992.01.22 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
STAATS, III, LOUIS T.;BRISTOW, JAMES A.;NORONHA, ANIL P. F.;MURPHY, GREGORY E. |
分类号 |
B01D11/02;B01D35/02;B01J3/03;B01L3/00;F16J13/02;F16J15/02;G01N1/34;G01N1/40;G01N30/02;G01N30/60;G01N30/88 |
主分类号 |
B01D11/02 |
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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