Ultrasonic sector scanner having fluid replacement capability

Details Ultrasonic sector scanner having fluid replacement capability Ultrasonic sector scanner having fluid replacement capability

1984-11-02

1985-05-21

Ciarlante, A. V.

Measuring and testing

Vibration

By mechanical waves

73634, 128660, G01N 2904

Patent

active

045178402

ABSTRACT:
A sector scanner which compensates for fluid leakage from the sealed transducer cavity includes a bladder in the cavity which is vented to the outside atmosphere whereby the bladder expands to compensate for the loss of fluid and a differential pressure between the cavity and the outside atmosphere is avoided. Alternatively, a fluid filled bladder is provided outside of the cavity and a port in the bladder is in fluid communication with the sealed cavity whereby fluid lost from the cavity is replaced by the fluid filled bladder. The bladder can be expandible with the fluid therein being under pressure.

REFERENCES:
patent: 4149419 (1979-04-01), Connell et al.
patent: 4165648 (1979-08-01), Pagano
patent: 4237901 (1980-12-01), Taenzer
patent: 4316271 (1982-02-01), Evert

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