Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1986-12-05
1988-12-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310338, 310367, 310800, H01L 4108
Patent
active
047942959
ABSTRACT:
A pressure sensing transducer comprises a central region which comprises a potting material and which is surrounded by a helix of piezo electric coaxial cable. The transducer includes a barrier that suppresses transmission of external pressure variations to the central region. In addition, the overall radial stiffness of the potting material and barrier is sufficiently low that the electrical signal generated by the coaxial cable have a d.sub.31 polarity (corresponding to axial stretching and contracting of the cable).
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Pantelis, ACS Symposium Series 242, 399 (1984).
Atkinson Edward B.
Barnett Peter N.
Booth Michael C.
Fox David R.
Penneck Richard J.
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