Switch operated actuating device

Details Switch operated actuating device Switch operated actuating device

1997-10-29

1998-09-22

Lefkowitz, Edward

Communications: electrical

Land vehicle alarms or indicators

For school bus

340480, 340487, 318281, 318282, B60Q 126

Patent

active

058120521

ABSTRACT:
An actuating device for operating a safety unit mounted on a vehicle which includes a motor having an output shaft, a movable support for supporting the safety unit and moving it between its retracted and extended positions, and a non-mechanical switch arrangement that includes a pair of beam generators and sensors located in the path of the beams, and a plate for interrupting the beam and generating one control signal, and permitting passage of the beam to the sensor to generate another control signal. A control circuit is provided to operate the motor and movable support between its retracted and extended positions in response to the sensor's signals.

REFERENCES:
patent: 4138668 (1979-02-01), Latta et al.
patent: 4339744 (1982-07-01), Latta
patent: 4559518 (1985-12-01), Latta
patent: 4697541 (1987-10-01), Wicker
patent: 4983949 (1991-01-01), Wicker
patent: 5038136 (1991-08-01), Watson
patent: 5357239 (1994-10-01), Lamparter

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