US PATENT SUBCLASS 310 / 323.16-- .~.~.~.~.~ Eliptical motion at fixed point (i.e., walking) or Ratchet and Pawl motor

US PATENT SUBCLASS 310 / 323.16
.~.~.~.~.~ Eliptical motion at fixed point (i.e., walking) or Ratchet and Pawl motor

Current as of: June, 1999
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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}
323.16		.~.~.~.~.~ Eliptical motion at fixed point (i.e., walking) or Ratchet and Pawl motor

DEFINITION

Classification: 310/323.16

Elliptical motion at fixed point (i.e., walking) or Ratchet and Pawl motor:

(under subclass 323.02) Subject matter having either (a) an actuator with a fixed base and two or more piezoelectric elements each causing the actuator to move in a direction, the combined motion of the two or more piezoelectric elements causes the actuator to orbit, whereby repetitive orbits of the actuator pushes the driven member along a direction of travel or (b) a rotor or a driven member is constrained by a hinged or pivoted device adapted to fit into a notch or sloping tooth of a bar or wheel to permit motion in one direction only.