METHODS AND APPARATUS FOR GENERATING AND/OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC OR ULTRASONIC FREQUENCY FOR PERFORMING MECHANICAL WORK IN GENERAL (measurement and analysis of mechanical vibrations Fulltext... Hierarchy... Expanded...G01H; in direction finding, locating, distance and velocity measuring Fulltext... Hierarchy... Expanded...G01S; control of mechanical vibrations in general Fulltext... Hierarchy... Expanded...G05D; generation of electrical oscillations Fulltext... Hierarchy... Expanded...H03B; electromechanical resonators in general Fulltext... Hierarchy... Expanded...H03H; electromechanical transducers Fulltext... Hierarchy... Expanded...H04R) |