Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-05-06
2008-05-06
San Martin, Jaydi A (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323050, C310S323090, C310S323190, C310S354000, C310S355000
Reexamination Certificate
active
07368853
ABSTRACT:
The invention relates to a piezoelectric motor comprising a piezoelectric component that is connected to a resonator and a two-dimensional resonator that interacts with a movable. element, the resonator having principal surfaces that are parallel to each other and that are also identical in shape and size. The invention further relates to methods for producing such piezoelectric motors, wherein the resonators are manufactured by cutting a profiled, extruded bar into lengths or by cutting, preferably by punching, from sheet metal having constant thickness. Finally, this invention relates to a method for exciting such a piezoelectric motor, wherein the excitation frequency or frequencies is/are generated by the control electronics as a function of time in response to the respective peak current and/or in response to the respective phase minimum between current and voltage and/or in response to the change in phase.
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Davidson Erick M.
Hagemann Benjamin
Magnussen Bjoern B.
Schuler Dieter A.
Varadi Peter C.
Elliptec Resonant Actuator Aktiengesellschaft
Martin Jaydi A San
Stetina Brunda Garred & Brucker
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