Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2009-02-06
2011-10-04
Dougherty, Thomas (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
08030827
ABSTRACT:
In a crystal unit, at least two places of an outer circumference of a quartz crystal blank, which are places that correspond to both ends of a stress sensitivity zero axis of the crystal blank, are supported by supporters and fixed to the supporters by conductive adhesives. Each supporter includes; a vertical portion with a surface extending vertically, a slit formed in the vertical portion as extending vertically and with both ends thereof being closed, and a tongue portion projecting from a lower end of the slit. Each conductive adhesive includes; a first portion formed between the tongue portion and a lower surface of the crystal blank, a second portion extending to an end face of the crystal blank from an outer surface of the supporter and through the slit, and a third portion formed between an inner surface of the supporter and an upper surface of the crystal blank.
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Japanese Office Action for Japanese Patent Application No. 2008-026220 dispatched Apr. 20, 2010 with partial English translation.
Hara Kouichi
Iwasaki Takahiko
Obara Shigeru
Addison Karen B
Cantor & Colburn LLP
Dougherty Thomas
Nihon Dempa Kogyo Co. Ltd.
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