Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-04-19
2011-04-19
Dougherty, Thomas M (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
07928637
ABSTRACT:
A piezoelectric perovskite mixed oxide compound has the general formula (BiFeO3)x—(PbTiO3)1-xand contains up to 5 at % lanthanum or other rare earth substitution, in which x has a value in the range 0.5 to 0.9. Such compounds are capable of withstanding gas turbine operating temperatures and are suitable for use in sensing and actuation functions in aerospace and other applications.
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Bell Andrew John
Comyn Timothy
Aycock, II Stephen W.
Dougherty Thomas M
Goodrich Control Systems
Miles & Stockbridge PC
Schaffer David R.
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