Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-08-02
2005-08-02
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S344000
Reexamination Certificate
active
06924582
ABSTRACT:
A piezoelectric vibrator has a container having a hermetically sealed cavity and a transparent portion for transmitting therethough a laser beam into the hermetically sealed cavity. A piezoelectric vibrator piece is disposed in the hermetically sealed cavity. A gettering substance is disposed directly on a surface of the piezoelectric vibrator piece so that when a laser beam is irradiated on the metal film through the transparent portion of the container the metal film is vaporized to absorb any gases contained in the hermetically sealed cavity of the container to thereby increase a degree of vacuum within the hermetically sealed cavity.
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Matsuyama Masaru
Shimizu Satoshi
Adams & Wilks
Dougherty Thomas M.
Seiko Instruments Inc.
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