Electromagnetic actuator device
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United States of America Patent
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Mar 28, 2017
Grant Date -
Mar 6, 2014
app pub date -
Aug 28, 2013
filing date -
Aug 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An electromagnetic actuator device has a coil unit (28, 58) enclosing a first yoke section (16, 56) of a stationary yoke unit (10, 54), an armature unit (14, 64) movably guided relative to the yoke unit (10, 54), by energization to interact with a positioning partner on the output side of the armature unit (14, 64) and permanent magnetic agents (22, 36, 68) coupled into a magnetic flux circuit of the yoke unit (10, 54) wherein de-energization of the coil unit (28, 58) a permanent magnetic flux circuit through the yoke unit (10, 54) and a section of the armature unit (14, 64) that is free of permanent magnetic flux and energization displaces the permanent magnetic flux, out of the section, wherein the armature unit (14), by spring force is pre-loaded in a direction opposed to permanent magnetic retaining force of the armature unit (14, 64) and the positioning partner is a combustion engine unit.
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