Electromagnetic actuating device
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United States of America Patent
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-
Mar 13, 1990
Grant Date -
N/A
app pub date -
Feb 1, 1988
filing date -
Jun 2, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An actuation device having a moving member with a part magnetized perpendicularly to its displacement direction and two magnetic circuits having each, an air gap in which is arranged a portion of the magnetized part. Each magnetic circuit also has at least one electric energization coil coupled with it. The moving member is so arranged as to allow the magnetized part to effect a limited motion in both directions while the magnetic fluxes generated by the magnetized part are closed in the magnetic circuit outside the air gaps. The device provides a constant force on the limited path and has virtually no residual torque.
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