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US 8,912,873 B2Granted
Magnetic shielding apparatus
AssigneeNokia Corporation
InventorsJani Samuli Kuivallainen, Thomas Benedict Slotte, Leo Kärkkäinen
Life of this patent
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Abstract
An apparatus comprising: a transducer configured to generate a static magnetic field; at least one magnet plate configured with respect to the transducer to produce a magnetically shielded region from the static magnetic field; and at least one further plate located between the transducer and an exterior of the apparatus and within the magnetically shielded region wherein the at least one magnetic shielding plate is configured to form a trap for particles.
Claims19
An apparatus comprising:
- a transducer configured to generate a magnetic field;
- at least one magnetic plate configured to produce a magnetically shielded region from the magnetic field with respect to the transducer;
- and
- at least one further plate located between the transducer and an exterior of the apparatus wherein the at least one further plate is within the magnetically shielded region and configured to form a trap for particles,
- wherein the at least one further plate contains at least one air gap configured to form the trap for particles, said air gap being formed either:
- within a single one of said at least one further plate when said at least one further plate comprises one or more further said plates;
- or
- between two of said at least one further plate when said at least one further plate comprises at least two further said plates.
5 more elements
A method comprising:
- locating at least one magnetic plate between a transducer and an exterior of an apparatus configured to produce a magnetically shielded region from the magnetic field of the transducer;
- locating at least one further plate within the magnetically shielded region;
- and
- forming a trap for particles in the at least one further plate.
1 more element
Dependencies are inferred from the claim text.