Magnetic Shield
AssigneeNokia Corporation
InventorsJosef Stohr, Andreas Fromel, Christian Mayer
Life of this patent
Estimating the term…
Abstract
A mobile apparatus includes an internal hands-free loudspeaker and a magnetic shielding plate that protects external objects sensitive to magnetic fields from the high-level magnetic field generated by the loudspeaker.
Claims21
An electronic circuit carrier having at least a first and a second side, said sides facing away from each other, said circuit carrier comprising:
- a speaker placed on a first side arranged with a first magnetic shielding plate and a
- a second magnetic shielding plate arranged adjacent said second side.
7-10. (canceled)
13-18. (canceled)
A user removable cover for a mobile apparatus, said cover comprising an integral magnetic shielding plate.
A magnetic shielding plate for shielding the magnetic field of a loudspeaker, wherein said magnetic shielding plate is made of an alloy comprising 40 to 55% by weight Ni with reminder being mainly Fe.
A magnetic shielding plate for shielding the magnetic field of a loudspeaker with least one opening allowing passage of the sound produced by said loudspeaker.
Use of a magnetic shielding plate for shielding a magnetic field of a speaker, wherein said magnetic shielding plate is made of an alloy comprising 40 to 55% by weight Ni with reminder being Fe.
A method for shielding a magnetic field that is generated by a speaker in a mobile apparatus having a housing with outer walls, comprising placing a magnetic shield between said speaker and one of said outer walls.
Dependencies are inferred from the claim text.