A damping and actuating apparatus comprising...

A magnetostrictive actuator of a medical ultrasound...

A vibratory apparatus for a rotary-vibratory drill

Acoustic and magnetostrictive actuation

Acoustic pulse generator

Acoustic vibrator with variable sensitivity to external...

Acoustic wave transducer and sonar antenna with improved...

Acoustic-signal emitting device for vehicles

Acoustical wave transmitter in a liquid medium

Adjustable phase two shaft vibrator

An ultrasound emission system and an ultrasound treatment...

Animal warning system employing ultrasonic sounds and...

Apparatus and system for controlling the operating frequency...

Apparatus for converting side-to-side driving motion to...

Apparatus for creating acoustic oscillations in a running...

Apparatus for generating and transmitting sonic vibrations

Apparatus for generating shock waves

Apparatus for inserting flexible members into the earth

Apparatus for treating a patient with ultrasound waves and...

Apparatus with inversion linkage mechanism