Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1984-09-28
1986-07-15
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310328, H01L 4108
Patent
active
046008543
ABSTRACT:
The rotator comprises a piezoelectric bender (4) pivotally supported (2, 3) at one end and carrying a means for being clamped (6) to which a "payload" (7) may be attached. The bender (4) has split electrodes to keep its ends parallel when energized. Normally engaging the means for being clamped (6) are clamping members (15, 17) attached to a pair of piezoelectric benders (10, 11) which are fixed in supports (12, 13) resting on a base plate (1).
With the pair of benders (10, 11) energized, the means for being clamped (6) is released and energization of the central bender (4) results in the lifting of the payload (7) by one step. The means for being clamped (6) is then re-arrested and its pivot (2, 3) released by means of actuating the ends of bimorphs (10, 11) associated with clamping members 14 and 16 and the central bender (4) is permitted to stretch. The rotator is then prepared for the next step of rotation about the pivot (2). This embodiment permits rotation through about 15 degrees. Two further embodiments conceived for unlimited rotation are described.
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Bednorz Johannes G.
Lanz Martin A.
Nievergelt Hermann
Pohl Wolfgang D.
Budd Mark O.
Crane John D.
Dougherty Anne V.
International Business Machines Corp.
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