Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Reexamination Certificate
2005-11-16
2008-11-25
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
C340S665000, C340S572600
Reexamination Certificate
active
07454978
ABSTRACT:
A strain sensor includes a load carrying body configured to strain in response to a load applied along a load path. The sensor further includes a magnetostrictive electrical conductor affixed to the body but out of the load path. Application of the load causes the body to strain, which in turn results in a proportional stress being imparted to the magnetostrictive conductor, altering its magnetic permeability. A circuit is electrically connected to the conductor to detect such changes in permeability, which are indicative of the applied load.
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Lequesne Bruno
Schroeder Thaddeus
Taye Elias
Delphi Technologies Inc.
Dunlap Jonathan
Lefkowitz Edward
Marshall Paul L.
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