Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-07-08
2008-07-08
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S317000, C310S321000, C333S200000, C073S504020, C331S156000
Reexamination Certificate
active
07397172
ABSTRACT:
A piezoelectric resonator element, comprises: a base made of a piezoelectric material; at least a pair of resonating arms provided in a unified manner with the base and extending in parallel with each other from the base; a portion defining a long groove provided to each of the resonating arms along a longitudinal direction; and a driving electrode provided to the long groove. Each of the resonating arms includes a structure to adjust hardness balance between right and left structures with respect to a virtual central line extending in the longitudinal direction.
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Communication from European Patent Office regarding related application.
Gordon Bryan P
Harness & Dickey & Pierce P.L.C.
Schuberg Darren
Seiko Epson Corporation
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