Electrically operated system for drawing curtains and other type

Details Electrically operated system for drawing curtains and other type Electrically operated system for drawing curtains and other type

1989-06-22

1990-10-23

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318 15, 318480, 160331, 192 002R, A47H 500

Patent

active

049654985

ABSTRACT:
An electrically operated drawing system for drawing and undrawing curtains includes an electric motor, a clutch having a solenoid, a rotation detector for detecting rotation of the electric motor, an operating switch for outputting command signals, and a control logic circuit. The control logic circuit controls the rotation of the motor and the activation of the clutch. The clutch is used to operatively engaged the rotating motor with the curtains to thereby draw and undraw the curtains. The clutch includes a first spur gear drivable by the electric motor and a second spur gear operatively connected to the curtains. The clutch further includes an arm pivotally mounted to the second spur gear and a solenoid connected to the arm. A movement of the solenoid cause a movement of the arm to operatively engage the first and second spur gears.

REFERENCES:
patent: 4234833 (1980-11-01), Barrett
patent: 4364003 (1982-12-01), Phipps
patent: 4471274 (1984-09-01), Ross et al.
patent: 4564791 (1986-01-01), Brickner
patent: 4612485 (1986-09-01), Suska
patent: 4775039 (1988-10-01), Sunakawa
patent: 4819708 (1989-04-01), Onosato et al.
patent: 4827199 (1989-05-01), Kaucic et al.

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