ANGULAR ACCELERATION SENSOR
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United States of America Patent
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app pub date -
May 18, 2015
filing date -
Nov 19, 2012
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Abstract
An angular acceleration sensor includes a flat plate surface, a fixed portion, a weight portion, and a beam portion. The weight portion includes a recessed portion that is recessed in an X-axis negative direction in the flat plate surface. The fixed portion includes a projecting portion that projects in the X-axis negative direction in the flat plate surface to be opposed to the recessed portion. The beam portion extends from the projecting portion in a Y-axis positive direction in the flat plate surface, and is connected to the recessed portion at an end portion in the Y-axis positive direction. Beam-portion proximity regions of the fixed portion and the weight portion in proximity to connecting positions to the beam portion are plane-symmetrical with respect to a stress neutral plane in the flat plate surface.
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