Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Reexamination Certificate
2007-08-13
2008-09-02
Barrera, Ramon M (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
C359S196100, C359S198100, C359S199200, C359S212100, C359S213100, C359S214100, C310S036000
Reexamination Certificate
active
07420449
ABSTRACT:
A magnetic actuator utilizes a single magnet and two voice coils to rotate a mirror between two angular positions with respect to a rest state. A magnetic field assembly applies magnetic flux across the voice coils. An upper plate and a lower plate are held together by a permanent magnet, so that each plate forms a magnetic pole. The voice coils are actuated by feeding current to their coils, resulting in an electromagnetic field being formed around the coils. The voice coils have magnetic flux passing across them, caused by the magnet and the two plates. Hence, the coils move upward or downward according to the current applied. A mirror holder includes a fixed periphery and moving arms attached to a torsional beam spanning the periphery. The arms are moved by the adjacent voice coils, twisting the torsional beam, and the attached mirror moves also.
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International Search Report dated Nov. 7, 2007 for application No. PCT/EP2007/006558.
German Search Report Aug. 6, 2007.
Barrera Ramon M
OC Oerlikon Balzers AG
Pearne & Gordon LLP
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