Electric-driving device for openable members

Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Having electrical synchronizing interconnections

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Details

318 55, 318266, 318467, H02P 768

Patent

active

049183605

ABSTRACT:
An electric driving device for openable members in which an openable member is opened and closed by rotation of driving shafts provided on right and left sides. The device includes a motor which rotates the driving shafts via a reduction mechanism, and switching relays which switch the rotational direction of the motor. Open and close command switches command the opening and closing of the openable member and a rotation synchronization sensor associated with the motor generates pulses synchronized with the rotation of the motor. A mechanical stopper limits the rotation of the driving shaft which is rotated via the reduction mechanism of the motor and a motor lock detecting means detects locking of the motor by detecting the pulse width generated by the rotation synchronization sensor. Also, an actuation stopping arrangement stops the actuation of an actuation device which supplies current to the motor if a signal is generated by the detection apparatus that detects locking of the motor.

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patent: 4408146 (1983-10-01), Beckerman
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patent: 4563625 (1986-01-01), Kornbrekke et al.
patent: 4644235 (1987-02-01), Ohta
patent: 4766356 (1988-08-01), Handa et al.

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