Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-10-30
1994-04-12
Housel, James C.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310333, 310323, 73 5427, G01N 1102, H01L 4104, H01L 4118
Patent
active
053028783
ABSTRACT:
An acoustic rheometer working in the high frequency range comprises a torsional-mode transducer which is a crystal of the sillenites class, having a height that determines the resonance frequencies of the mode of torsion, and being provided with an electrical excitation means. Furthermore, the sensor is a rod made of an iron
ickel alloy having a very low thermoelastic coefficient. The rod is rigidly connected to the transducer. The respective diameters of the transducer and of the sensor are chosen so that the coefficient of reflection at the transducer/sensor interface is zero. The rheometer can be used in ink-based printing systems.
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Attane Pierre
Gaglione Renaud
Soucemarianadin Arthur
Housel James C.
Imaje S.A.
Trembley Theresa A.
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