Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1992-10-05
1994-03-01
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
H01F 710
Patent
active
052911705
ABSTRACT:
An electromagnetic actuator having an integral calibration mechanism for easy adjustment of armature response times. An additional (secondary) coil is incorporated into the device for providing a magnetic field opposing the magnetic field produced by the actuator's primary coil. A variable resistive element, used in conjunction with the secondary coil, provides a means for adjusting the current flow through the secondary coil and thereby the strength of the resultant magnetic field experienced by the armature. Since an is armature's response is proportional to the strength of the magnetic field to which it is subjected, this invention provides a means of calibrating the armature response times of an actuator. The availability of establishing a uniform, desired response results in improved multiple actuator system functionality and more reliable actuator interchangeability.
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Rissi Paul B.
Wahba Brent J.
Donovan Lincoln
General Motors Corporation
Navarre Mark A.
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