Inventors:
Steven G. Petermann - Plano TX
Keith W. Katahara - Allen TX
Herbert A. Wolcott - Dallas TX
Assignee:
Atlantic Richfield Company - Los Angeles CA
International Classification:
H04R 1700
Abstract:
A displacement amplifier interconnects a piezoelectric actuator with a displacement member and comprises respective bellows members of differential diameter defining first and second expansible chambers which are liquid filled and respond to linear displacement of a stack of piezoelectric disks to provide an amplified linear displacement to the displacement member. The transducer is particularly useful as a signal transmitting or receiving transducer for acoustic wave generation or measurement for wellbore logging tools.