Electricity: motive power systems – Motor-reversing
Reexamination Certificate
2007-12-25
2007-12-25
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Motor-reversing
C318S132000, C318S254100, C318S434000, C318S283000, C318S286000
Reexamination Certificate
active
11079016
ABSTRACT:
A powered panel moving system includes a motor, electronic drive circuitry, a mechanism, a coupler, and electronic function circuitry. The drive circuitry drives a rotor of the motor. The coupler couples rotational output of the rotor to the mechanism to drive the mechanism in order to move the panel. The function circuitry is integrated with the drive circuitry for providing additional functionality beyond driving the motor for panel movement. The drive circuitry includes a current sensor for determining rotor position based on motor current, a back emf sensor for determining rotor position based on back emf of the motor, and an impedance sensor for determining rotor position based on motor impedance. The function circuitry may include an analyzer to determine presence of an obstruction to the motion of the panel based on at least one of the rotor position, the motor current, and the back emf of the motor.
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Cooper Stephen R. W.
Newman Todd R.
Strom Peter H.
Washeleski John M.
Brooks & Kushman P.C.
Donovan Lincoln
NPC Corporation
Smith Tyrone
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