Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2007-11-20
2007-11-20
Patidar, Jay M (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetometers
Reexamination Certificate
active
10592409
ABSTRACT:
A flexible fluxgate including:at least two ferromagnetic or ferrimagnetic, flexible cores;at least two sets of a plurality of windings of an electrically conductive material, at least one set of windings being wound around each of the cores; andan electrically conductive, flexible shield enclosing the cores and the windings.The fluxgate may have a considerable length, e.g. several hundreds of meters, and can be arranged in an open loop. The fluxgate may be used in an access control system. Various fluxgate magnetometers are disclosed as well.
REFERENCES:
patent: 2432514 (1947-12-01), Depp et al.
patent: 4205266 (1980-05-01), Lichtenberg
patent: 6278272 (2001-08-01), Scarzello et al.
patent: 6417665 (2002-07-01), Scarzello et al.
patent: 2004/0251897 (2004-12-01), Pedersen
patent: 10224582 (2003-12-01), None
patent: 0604810 (1994-07-01), None
patent: 592394 (1942-05-01), None
patent: 2339294 (2000-01-01), None
patent: 2386199 (2003-09-01), None
Bartington, G., Sensors for Low Level, Low Frequency Magnetic Fields (1994).
ELSEVIER Abstract Accession No. XP004184461, Dezuari et al., “Sensors and Actuators A: Physical”, published 1999, vol. 76, pp. 349-355, “Development of a novel printed circuit board technology for inductive device applications”.
Bartington Instruments Limited
Patidar Jay M
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