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JPS59154997

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DESCRIPTION JPS59154997
[0001]
Brief description of the drawings
[0002]
1 is a sectional view of a conventional ultrasonic ceramic microphone, FIG. 2 is a sectional view
of a conical resonator used in the conventional ultrasonic ceramic microphone, and FIG. 3 is one
of the ultrasonic ceramic microphones according to the present invention. FIG. 4 is a crosssectional view of a frusto-conical resonator provided with a cylindrical portion used in the
ultrasonic ceramic microphone according to the present invention. DESCRIPTION OF SYMBOLS 1
ииии Piezoelectric ceramic plate, 2 иииииии Bimorph oscillator, 4 иииии Adhesive (epoxy resin adhesive), 5
ииииии Terminal plate, 6 ...... elastic adhesive, 8 ...... case, 12 ...... frustoconical resonator, 12a ......
tubular portion.
04-05-2019
1
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