Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-07-24
2007-07-24
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S316010
Reexamination Certificate
active
10522309
ABSTRACT:
A piezoelectric motor for moving and positioning a load, the motor comprising: a piezoelectric vibrator having a plurality of electrodes and a coupling surface which is pressed to a load; and a power supply selectively operable to electrify at least one vibrator electrode with time varying voltage to generate vibrations in the coupling surface that step the load to a desired position or to electrify at least one vibrator electrode with DC voltage to displace the coupling surface and move thereby the load to a desired position, which DC voltage the power supply maintains to maintain the load at the desired position.
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Dougherty Thomas M.
Eitan Law Group
Nanomotion Ltd
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