Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-01-31
2006-01-31
Budd, Mark (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S311000
Reexamination Certificate
active
06992422
ABSTRACT:
A position sensor for a pivoting platform which has a first portion that flexes when the platform pivots and a second portion of the platform that is rigid, utilizes a piezoresistive element on the first portion of the platform. A connecting terminal for the piezoresistive element is on the second portion and thus not subject to the flexing stresses. The platform can have two symmetrical arms as the flexing portion, and a pair of piezoresistive elements can be formed on each of the arms in order to double the output voltage changes with changes in these positions of the platform. A temperature compensating piezoresistive element can be formed on the rigid portion of the platform and connected to the piezoresistive element or elements. The piezoresistive elements can be formed directly on the portions of the platform.
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Piezo Systems, Inc., Introduction to Piezo Transducers, Piezo Systems—Piezo Actuators & Transducers, pp. 1-8, Internet, Cambridge, Massachusetts, USA.
Dewa Andrew S.
Heaton Mark W.
Turner Arthur M.
Budd Mark
Kempler William B.
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