Electrostrictive compound actuator

Details Electrostrictive compound actuator Electrostrictive compound actuator

2005-08-23

2005-08-23

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S330000, C310S331000

Reexamination Certificate

active

06933662

ABSTRACT:
The present invention presents a system for a compound actuator. The system includes first and second electrode layers each including two electrode sections, an intermediate electrode layer between the first and second electrode layers, and first and second electrostrictive materials that change length in an applied electrical field. The first electrostrictive material is positioned between the first and intermediate electrode layers. The second electrostrictive material is positioned between the intermediate and second electrode layers. The first electrostrictive material has a first length adjoining the first electrode section and a second length adjoining the second electrode section. The second electrostrictive material has a third length adjoining the fourth electrode section and a fourth length adjoining the fifth electrode section. The first and second electrostrictive materials are attached such that differential changes in the first and third lengths, and the second and fourth lengths, respectively, results in a compound lateral motion.

REFERENCES:
patent: 2242756 (1941-05-01), Pope
patent: 5552658 (1996-09-01), Dibbern et al.
patent: 6297579 (2001-10-01), Martin et al.
patent: 6429574 (2002-08-01), Mohr et al.
patent: 1-234064 (1989-09-01), None
patent: 6-232469 (1994-08-01), None

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