Device for avoiding accidents when closing a movable panel, for

Details Device for avoiding accidents when closing a movable panel, for Device for avoiding accidents when closing a movable panel, for

1976-04-15

1977-09-13

Miller, J D

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

318469, H02H 7085

Patent

active

040486621

ABSTRACT:
A cut-off switch is provided between the motor driving a sliding panel and the power supply for the motor. The cut-off switch becomes operative when the torque supplied by the motor during the displacement of the panel between the open and closed positions of the panel exceeds a predetermined value. An inhibiting device inhibits the actuation of the cut-off switch when the panel is in the immediate vicinity of its closed position.

REFERENCES:
patent: 2426640 (1947-09-01), Peterson
patent: 2611888 (1952-09-01), Richards
patent: 2715706 (1955-08-01), Chin
patent: 3178627 (1965-04-01), Houk
patent: 3813590 (1974-05-01), Ellmore
patent: 3886407 (1975-05-01), Anderson
patent: 3891909 (1975-06-01), Newson

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