Drive circuit for power operation of a movable part of a vehicle

Details Drive circuit for power operation of a movable part of a vehicle Drive circuit for power operation of a movable part of a vehicle

1975-10-29

1978-01-24

Schaefer, Robert K.

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318265, 318282, G05D 300, H02P 104, H02P 300

Patent

active

040706079

ABSTRACT:
A control device for a motor-driven closure panel, for instance an automobile sunroof panel whose closed position is an intermediate position between an open, retracted position and another open, pivoted position, the circuitry for the reversible motor including an impulse relay operating a control switch in one of the two motor connections, the relay coil being connected in parallel to the motor and between the control switch and the pole reversing switch, a position-responsive switch cutting off the relay circuit whenever the panel moves out of its closed position and energizing the impulse relay whenever the panel reaches the closed position. An improved switch arrangement prevents the panel from being stuck in a position in which the reversible motor becomes inoperative.

REFERENCES:
patent: 2405628 (1946-08-01), Yardeny
patent: 2695382 (1954-11-01), Wheatley et al.
patent: 2991403 (1961-07-01), Groft
patent: 3508133 (1970-04-01), Schneider et al.

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