Measuring and testing – Fluid pressure gauge – Diaphragm
Reexamination Certificate
2005-06-07
2005-06-07
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
Diaphragm
C073S718000
Reexamination Certificate
active
06901808
ABSTRACT:
A capacitive manometer includes a flow passage through which gas can enter the manometer, a deflectable diaphragm, and a filter arranged in the flow passage. The filter is capable of removing condensable vapors from the gas so that the condensable vapors do not reach and deposit on the diaphragm. The capacitive manometer can include a cooling unit arranged to cool the filter so as to enhance removal of condensable vapors from the gas by the filter. The capacitive manometer can include a baffle having gas passages distributed to control distribution of condensable vapors, which pass through the baffle, on the diaphragm.
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Benjamin Neil
Fish Jeffrey W.
Sharpless Leonard J.
Allen Andre
Burns Doane , Swecker, Mathis LLP
Lam Research Corporation
Lefkowitz Edward
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