Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-03-08
2011-03-08
Dougherty, Thomas M (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S312000, C310S333000, C310S365000
Reexamination Certificate
active
07902721
ABSTRACT:
A crystal resonator comprises an AT-cut crystal vibrating element that is driven by a thickness-shear mode and is in the shape of a rectangular plate. A pair of excitation electrodes is formed, facing front and rear surfaces of the crystal vibrating element. Each of the excitation electrodes is formed in the shape of a quadrangle as viewed from the top, and mass adjustment portions are formed at least two opposite sides of each of the excitation electrodes formed on the front and rear surfaces.
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Daishinku Corporation
Dougherty Thomas M
Mots Law PLLC
Motsenbocker Marvin A.
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