Ultrasonic transducer

Details Ultrasonic transducer Ultrasonic transducer

1995-07-13

1997-03-18

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

310336, 310348, 310351, 381173, 381190, H04R 1500

Patent

active

056129300

ABSTRACT:
In ultrasonic transducer which can be utilized to detect partial electrical discharges and oil-filled devices is disclosed. The transducer includes a housing, a piezoelectric crystal assembly received within the housing and positioned so that the piezoelectric element contacts the base surface of the housing, and a retaining member which grippingly engages the housing and applies a compressive force to the piezoelectric crystal assembly. The retaining member includes a hub portion and a plurality of angularly spaced-apart arms extending radially outwardly from the hub portion. The arms are positioned with respect to the hub portion so as to grippingly engage the inner surface Of the housing and causing the retaining member to apply a compressive force to the piezoelectric crystal assembly.

REFERENCES:
patent: 5280724 (1994-01-01), Higo et al.

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