Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Reexamination Certificate
2005-11-22
2005-11-22
Donovan, Lincoln (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
C335S220000, C335S179000, C123S090110
Reexamination Certificate
active
06967550
ABSTRACT:
An electromagnetic regulating device with a movable actuator (42), especially a piston, having an engagement region (44) on an end thereof, and a coil device (34, 36), which is stationary relative to the actuator and which is designed to exert a force on the actuator. The electromagnetic regulating device is provided with permanent magnet means, through which the actuator (42) is held to the coil device (34, 36) in the inactive state of the coil device (34, 36) and wherein when current is applied to the coil device (34, 36), the actuator (42) is released from the coil device (34, 36), overcoming a retaining force of the permanent magnet means.
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“Fast-Acting Long-Stroke Bistable Solenoids with Moving Permanent Magnets”,IEEE Transactions on Industry Applications, vol. 26, No. 3, May-Jun. 1990.
Dittrich Matthias
Elendt Harald
Faria Christof
Donovan Lincoln
INA-Schaeffler KG
Volpe and Koenig P.C.
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