Measuring and testing – Fluid pressure gauge – Electrical
Patent
1990-08-27
1991-11-05
Orsino, Joseph A.
Measuring and testing
Fluid pressure gauge
Electrical
73721, 73DIG4, 338 4, G01L 900
Patent
active
050623028
ABSTRACT:
An electromechanical sensor is provided which comprises: first semiconductor wafer including a first stop surface residing in a first shallow recessed region of the first wafer; a second semiconductor wafer; wherein the first and second semiconductor wafers are laminated together such that the first recessed region of the first wafer and the second wafer define a first chamber in which the first stop surface and the second wafer are disposed close enough together such that the first stop surface restrains the second wafer from deflecting beyond the first stop surface; and an apparatus for measuring deflection of the second wafer.
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Barth Phillip W.
Bryzek Janusz
Mallon, Jr. Joseph R.
Petersen Kurt E.
Asman Sanford J.
Orsino Joseph A.
Schlumberger Industries Inc.
Swarthout Brent A.
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