Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1987-08-19
1989-03-07
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310324, 310330, 310331, 310800, 367160, 367165, 367173, 367180, H01L 4108
Patent
active
048109134
ABSTRACT:
A hydrophone is provided having at least one flexible piezoelectric sensitive element applied to a support, each sensitive element being formed of a flexible piezoelectric film associated with two electrodes and is applied to a synthetic plastic material support one face at least of which has hollow parts of very different shapes, for example an homogeneous distribution of cups, honeycombs, holes, etc, whose dimensions are determined as a function of the mechanical characteristics of the films used. The stresses applied thereto result in deforming each film inwardly of the hollow parts, which very greatly increases the sensitivity.
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Beauducel Claude
Gautier Thierry
Budd Mark O.
Institut Francais du Pe'trole
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