Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2007-11-29
2010-10-05
Patidar, Jay M (Department: 2858)
Electricity: measuring and testing
Magnetic
Displacement
C324S207160
Reexamination Certificate
active
07808235
ABSTRACT:
An inductive proximity sensor is disclosed. The proximity sensor includes a resonator with a bifurcated inductance coupled to a plurality of transimpedance amplifiers. A portion of the resonator is configured to generate eddy currents in a target containing metal. In various embodiments, the transimpedance amplifiers provide signals associated with eddy currents to a synchronous detector. Apparatus and methods for operating the inductive proximity sensor are disclosed.
REFERENCES:
patent: 5072180 (1991-12-01), Moreau
patent: 6335619 (2002-01-01), Schwab et al.
patent: 2002/0070729 (2002-06-01), Muller
patent: 2009/0021248 (2009-01-01), Bernard et al.
Kulkarni Prachi S.
Rollins George E.
Miller John M.
Patidar Jay M
Rockwell Automation Technologies Inc.
Schwegman, Lundberg & Woessner LLP
Walbrun William R.
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