Magnetic actuator

Details Magnetic actuator Magnetic actuator

2005-08-30

2005-08-30

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

C359S220100

Reexamination Certificate

active

06937121

ABSTRACT:
A pivotally movable member21comprising a substrate22and a frame-shaped ferromagnetic layer23formed on the substrate is located in a magnetic field generated by a permanent magnet27at oblique magnetic field position and pivotally movably supported at one end by a pair of torsion hinges24while a movable member31comprising a substrate32and a frame-shaped ferromagnetic layer33formed on the substrate32is driven by an electrostatic actuator36, 37in a direction perpendicular to a pivot axis defined by the torsion hinges24to move into a space between the permanent magnet27and the pivotally movable member21, whereby the pivotally movable member21is caused to pivot by a repulsive force produced between the pivotally movable member21and the movable member31.

REFERENCES:
patent: 5912608 (1999-06-01), Asada
patent: 6108118 (2000-08-01), Minamoto
patent: 6204544 (2001-03-01), Wang et al.
patent: 6765706 (2004-07-01), Tokuda et al.
patent: 6819822 (2004-11-01), Behin et al.
patent: 2001/0021058 (2001-09-01), McClelland et al.
patent: 2002/0060830 (2002-05-01), Miyajima et al.
patent: 2146143 (1990-06-01), None
patent: 6180428 (1994-06-01), None
patent: WO02/080207 (2002-10-01), None

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