Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-03-29
2009-02-24
SanMartin, Jaydi (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S324000, C310S365000, C347S068000, C347S069000, C347S070000, C347S071000, C347S072000
Reexamination Certificate
active
07495373
ABSTRACT:
A piezoelectric actuator for a liquid transporting apparatus includes a drive plate having a base portion which is arranged, on an upper surface of a vibration plate covering a pressure chamber; outside of an end portion in a longitudinal direction of the pressure chamber, and a drive portion which extends from the base portion along the longitudinal direction at least up to an area facing a substantially central portion of the pressure chamber; and a piezoelectric layer arranged on the upper surface of the vibration plate. The drive plate is fixed to the vibration plate at the base portion and at the area facing the substantially central portion of the pressure chamber. By increasing an amount of deformation of the piezoelectric actuator, a liquid transporting apparatus with improved drive efficiency is provided.
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European Patent Office, European Search Report for Related Application No. EP 06006443, dated Jul. 5, 2007.
Baker & Botts L.L.P.
Brother Kogyo Kabushiki Kaisha
SanMartin Jaydi
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