Piezoelectric actuator and liquid jetting apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9142753
APP PUB NO 20150035906A1
SERIAL NO

14446426

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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There is provided a piezoelectric actuator, including: first and second piezoelectric layers; a driving electrode arranged between the first and second piezoelectric layers; a second electrode maintained at a predetermined first electrical potential; and a third electrode maintained at a second electrical potential. A neutral plane of the piezoelectric actuator is positioned at a side opposite to the second piezoelectric layer relative to a center plane of the first piezoelectric layer in a direction of stacking of the first and second piezoelectric layers. A first portion of the first piezoelectric layer is sandwiched between the driving electrode and the second electrode, and a second portion of the second piezoelectric layer is sandwiched between the driving electrode and the third electrode. The first and second portions are polarized parallel to the stacking direction such that they are polarized in mutually opposite directions.

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Patent Owner(s)

  • BROTHER KOGYO KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kanzaki, Shotaro Nagoya, JP 35 12
Kura, Keiji Chita, JP 35 81
Mizuno, Taisuke Nagoya, JP 83 124
Naito, Kyohei Nagoya, JP 18 26
Sueyasu, Masato Nagoya, JP 12 61
Takebayashi, Mizuyo Nagoya, JP 4 5

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