Electricity: motive power systems – Braking – Dynamic braking
Reexamination Certificate
2006-06-09
2008-11-25
McCloud, Renata (Department: 2837)
Electricity: motive power systems
Braking
Dynamic braking
C318S372000
Reexamination Certificate
active
07456594
ABSTRACT:
An electric motor system includes a motor brake control circuit that uses current induced in the motor stator from generated back EMF to keep the motor brake energized and in its disengaged position, should electric power be lost to the motor system. When the motor has slowed sufficiently that the induced current is no longer sufficient to keep the motor brake energized, the motor brake will move to its engaged position, and prevent further motor rotation. The motor rotational speed at which the motor brake is no longer energized is sufficiently low that any potential degradation or other deleterious effects from motor brake engagement are minimized.
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Lane Glenn H.
Potter Calvin C.
Wingett Paul T.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
McCloud Renata
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