Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-03-29
2011-03-29
Budd, Mark (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S800000
Reexamination Certificate
active
07915790
ABSTRACT:
Electroactive polymer transducers are disclosed. They are biased in a manner that provides for increased force and/or stroke output, thereby offering improved work potential and power output capacity. The biasing may offer additional or alternate functional advantage in terms of matching transducer performance with a given application such as a normally-closed valve. The improved biasing (including increased output biasing) may utilize negative spring rate biasing and/or a combination of negative or zero-rate biasing with positive rate biasing to achieve the desired ends.
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Heim Jonathan R.
Hui Otto
Polyakov Ilya
Zarrabi Alizreza
Bayer MaterialScience AG
Budd Mark
Cheung Noland J.
Mrozinski, Jr. John F.
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