发明名称 |
Pressure standard |
摘要 |
A differential pressure gage apparatus is disclosed which utilizes two pistons movable within three bores to produce accurate differential pressures. An inner piston carried by an outer piston has sufficient length to extend into all bores at once.
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申请公布号 |
US5259235(A) |
申请公布日期 |
1993.11.09 |
申请号 |
US19920831883 |
申请日期 |
1992.02.06 |
申请人 |
RUSKA INSTRUMENT CORPORATION |
发明人 |
KOLB, KENNETH A. |
分类号 |
G01L7/16;G01L27/00;(IPC1-7):G01L7/16 |
主分类号 |
G01L7/16 |
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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