Acoustic transducers for acoustic position sensing apparatus

Details Acoustic transducers for acoustic position sensing apparatus Acoustic transducers for acoustic position sensing apparatus

1983-09-12

1985-01-22

Perkey, William B.

Communications, electrical: acoustic wave systems and devices

Borehole testing

354217, 3542891, 367 93, 340675, 310800, G03B 724, G03B 1700, H04R 1700

Patent

active

044948417

ABSTRACT:
To improve mass productivity of acoustic position sensing apparatus of the type wherein the position of an object is sensed with respect to a sensing port in an acoustic resonator, acoustic transducers for generating an acoustic signal in the resonator and for sensing the acoustic signal in the resonator comprise a sheet of poled piezoelectric material having electrodes on opposite sides thereof. The sheet is fixed over a transducer port in the acoustic resonator. Mass productivity is further improved by integrating a plurality of such acoustic transducers on a sheet of piezoelectric material by appropriately patterning the electrodes thereon.

REFERENCES:
patent: 3694800 (1972-09-01), Frank
patent: 3798959 (1974-03-01), Bowles et al.
patent: 3914754 (1975-10-01), Kirk
patent: 4049954 (1977-09-01), Da Costa Vieira et al.
patent: 4175441 (1979-11-01), Urbanek et al.
patent: 4285053 (1981-08-01), Kren et al.
patent: 4356422 (1982-10-01), van Maanen
patent: 4383194 (1983-05-01), Ohigashi et al.

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