Rotational coupling device with non-contact anti-rotation mechanism
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United States of America Patent
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Jul 18, 2017
Grant Date -
N/A
app pub date -
May 25, 2016
filing date -
May 25, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A rotational coupling includes a coupling disc configured to be disposed about a shaft having a rotational axis. An electromagnet assembly on one side of the coupling disc includes a housing and a conductor within the housing. An armature is disposed on an opposite side of the coupling disc opposite the conductor and the coupling disc, electromagnet assembly and armature form an electromagnetic circuit when current is supplied to the conductor to urge the armature towards engagement with the coupling disc. An anti-rotation mechanism for the electromagnet assembly includes one or more coupling permanent magnets and one or more fixed permanent magnets configured to be mounted to an outer surface of the housing of the electromagnet assembly and a fixed support structure, respectively. The coupling and fixed permanent magnets are arranged to inhibit movement of the coupling permanent magnets and electromagnet assembly in either rotational direction about the rotational axis.
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