Electrotiltable material (tilter)

Details Electrotiltable material (tilter) Electrotiltable material (tilter)

1992-02-10

1994-02-01

Stephan, Steven L.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310333, H01L 4108

Patent

active

052834972

ABSTRACT:
Tilters 2, are made of an electrotiltable material comprising an electroshearable material having a unidirectional gradient of responsivity, such as piezoelectric ceramic. Responsive to an activating electrical signal, tilters 2, tilt surfaces 26, with large side strain and negligible side stress. Forcible tilt provides forceful positioning of objects such as rollers, optical elements, and fluids. Tilting combined with a normal force of traction 16, forcefully moves a roller 12. Rollers pass tilting power to objects 14, in tractive contact such as a motor shaft 14. Alternating activation sense and tilting gradient 10 giving zero tilt at support surfaces 7, provide rigidity with negligible stress. Other embodiments use tilt to position optical elements, vary the flow resistance of fluid in a duct, and bunch charged particles. The actuator's tiltable surface 26 has an optical or acoustic element 52 attached for changing the angle at which radiation interacts with the element. A variant having tilt position sensors constitutes an accurate angular accelerometer.

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