310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
300 | DF | NON-DYNAMOELECTRIC {4} |
311 | DF | .~ Piezoelectric elements and devices {17} |
321 | DF | .~.~ Combined with resonant structure {4} |
323.01 | DF | .~.~.~ Direct mechanical coupling {5} |
323.02 | DF | .~.~.~.~ Motor producing continual motion {3} |
323.03 | DF | .~.~.~.~.~ Traveling wave motor {3} |
323.04 | .~.~.~.~.~.~ Stator {3} | |
323.05 | DF | .~.~.~.~.~.~.~> Support |
323.06 | DF | .~.~.~.~.~.~.~> Piezoelectric element or electrode |
323.07 | DF | .~.~.~.~.~.~.~> Oval track |