Electricity: motive power systems – Plural – diverse or diversely controlled electric motors
Reexamination Certificate
2008-11-21
2011-12-27
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
C318S599000, C318S400220, C318S400130, C318S434000, C318S066000, C323S274000, C323S284000, C363S074000, C363S071000, C361S023000, C361S024000, C361S025000, C361S027000, C361S028000
Reexamination Certificate
active
08084967
ABSTRACT:
A motor controller is provided. The motor controller includes a motor drive unit that drives a plurality of motors; a thermal shutdown unit that is provided in the motor drive unit and that stops the plurality of motors in the case of an overload; a lock signal generation unit that generates a lock signal corresponding to a respective one of the plurality of motors when a rotational speed of the respective motor reaches a threshold speed set for the respective motor; and an operation determination unit which, when the lock signal generation unit interrupts lock signals for all of the plurality of motors, determines that thermal shutdown unit has operated.
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Banner & Witcoff Ltd
Brother Kogyo Kabushiki Kaisha
Leykin Rita
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