Power drive control device of an automatic door

Details Power drive control device of an automatic door Power drive control device of an automatic door

1996-10-30

1998-01-13

Ip, Paul

Electricity: motive power systems

Automatic and/or with time-delay means

Radiant energy

318442, 318466, 318469, 49139, 49199, 160193, H02K 710, E05F 1300, E05F 1500

Patent

active

057083401

ABSTRACT:
A power drive control device of an automatic door, including a gear box having a shell; and a motor drive, the motor drive having a front cover integrally made with the shell of the gear box together, and a back cover covered on the front cover to hold a motor shaft, a stator coil around the motor shaft, a light chopper, and a photoelectric pick-up device, the front cover having a receiving chamber, two recessed holes and one screw hole formed in the receiving chamber and adapted for securing the photoelectric pick-up device in place, the light chopper being mounted around a bearing around the motor shaft to act with the photoelectric pick-up device, enabling the photoelectric pick-up device to monitor the operation of the motor shaft.

REFERENCES:
patent: 3874117 (1975-04-01), Boehm
patent: 4191237 (1980-03-01), Voege
patent: 4472910 (1984-09-01), Iha
patent: 4597428 (1986-07-01), Iha
patent: 4653565 (1987-03-01), Iha et al.
patent: 4795867 (1989-01-01), Ohi et al.
patent: 4902953 (1990-02-01), Kraft et al.
patent: 5197582 (1993-03-01), Cropley
patent: 5243784 (1993-09-01), Whitaker et al.

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