Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-07-05
2011-07-05
SanMartin, J. (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S334000, C310S336000, C600S437000, C600S459000
Reexamination Certificate
active
07973455
ABSTRACT:
A case member of an ultrasonic sensor includes an outer case member having a substantially cylindrical shape with a bottom surface and an inner case member. Cutout portions having a predetermined size are arranged so as to face each other in a lower portion of a sidewall of the inner case member. The inner case member is made of a metal material having a density that is greater than that of the outer case member. Consequently, an elliptical vibrating-surface amplitude profile can be formed in a vibrating surface of the ultrasonic sensor, and an ultrasonic sensor having stable anisotropy in directional properties can be provided. Further, the ultrasonic sensor has a small amount of displacement of side vibration.
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Official communication issued in counterpart International Application No. PCT/JP2006/316935, mailed on Dec. 12, 2006.
Official Communication issued in corresponding European Patent Application No. 06796915.4, mailed on Jun. 10, 2010.
The official communication issued in counterpart International Application No. PCT/JP2006/316935, mailed on Dec. 12, 2006.
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
SanMartin J.
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