Broadband acoustic point-contact transducer

Details Broadband acoustic point-contact transducer Broadband acoustic point-contact transducer

1987-01-14

1987-10-20

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310327, 310336, 310365, 310369, 369144, H01L 4108

Patent

active

047016582

ABSTRACT:
An acoustic transducer (10) with a pointed piezoelectric element (11) mounted on an electrically conductive damping mass (12), having a conductive tip (33), the damping mass (12) and conductive tip (33) being electrically connected to opposite terminals in a coaxial line (14). The conductive tip (33) has a convex wear member (35) for contact with a surface to be measured. In one version, the tip (33) is in contact with a flexible conductive sheet (17') for environmental protection.

REFERENCES:
patent: 2803129 (1957-08-01), Bradfield
patent: 3302044 (1967-01-01), Lynnworth et al.
patent: 3580057 (1971-05-01), Seegmiller
patent: 3794866 (1974-02-01), McElroy et al.
patent: 3824352 (1974-07-01), Adler
patent: 3865997 (1975-02-01), Halter
patent: 3950660 (1976-04-01), McElroy
patent: 4061934 (1977-12-01), Rowe
patent: 4365515 (1982-12-01), Abts
patent: 4530138 (1985-07-01), Ritter
patent: 4587848 (1986-05-01), Nakamura et al.
patent: 4673839 (1987-06-01), Veenendaal

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