Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2006-07-17
2010-11-16
Whittington, Kenneth J (Department: 2858)
Electricity: measuring and testing
Magnetic
Magnetometers
Reexamination Certificate
active
07834620
ABSTRACT:
Orthogonal fluxgate sensor for measuring an external magnetic field Hext, comprising a conductor for carrying an excitation current lexc, a ferromagnetic material adapted to saturate in the presence of a magnetic field generated by the excitation current, and at least one pick-up coil adapted to detect variations in the magnetic field in the vicinity of the magnetic material. The excitation conductor comprises a substantially linear elongated portion of conductive, non-magnetic material, forming an excitation rod (6). The magnetic material surrounds the excitation rod in the form of a cladding (8).
REFERENCES:
patent: 3218547 (1965-11-01), Ling
patent: 3718872 (1973-02-01), Takeushi
patent: 6194897 (2001-02-01), Fukunaga
patent: 6690164 (2004-02-01), Fedeli et al.
patent: 2004/0232913 (2004-11-01), Schott et al.
patent: 1 293 792 (2003-03-01), None
International Search Report for PCT/IB2006/002007 issued by the European Patent Office on Nov. 11, 2006.
Kejik Pavel
Zorlu Ozge
Baker & Daniels LLP
Liaisons Electroniques-Mecaniques Lem SA
Whittington Kenneth J
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