Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-08-01
2010-11-23
Dougherty, Thomas M (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S317000, C310S329000, C310S330000, C310S331000, C310S332000
Reexamination Certificate
active
07839057
ABSTRACT:
A movement detector which is rotatably installed on a base member includes a rotating member which has a body portion, and a connecting portion which rotatably connects the body portion to the base member, a piezoelectric layer which is formed on the connecting portion, and a plurality of electrodes which are provided on the piezoelectric layer, to be arranged in a direction of a rotation axis of the body portion, and which detect a voltage generated in the piezoelectric layer corresponding to a deformation of the connecting portion when the body portion has displaced with respect to the base member. Since the piezoelectric layer and the plurality of electrodes are provided to the connecting portion which rotatably connects the body portion to the base member, it is possible to detect a plurality of types of movements of the body portion by the piezoelectric layer and the plurality of electrodes.
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Brother Kogyo Kabushiki kaisha
Dougherty Thomas M
Frommer & Lawrence & Haug LLP
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