Automatic light-extinguishing circuit

Details Automatic light-extinguishing circuit Automatic light-extinguishing circuit

1988-07-18

1990-10-23

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 107, 315 82, 315 83, H01H 4718

Patent

active

049654616

ABSTRACT:
An automatic light-extinguishing circuit (60) is disclosed for extinguishing, for example, the headlights (30) of an automobile some interval of time after the ignition switch (54) is opened. The circuit includes a temperature-actuated switch (72), switching relay (78), and diode (86). The heating element (74) of the temperature-actuated switch and a solenoid (80) of the switching relay are energized upon closure of the ignition switch, closing two normally open switch element (82 and 84). In this condition, current passes through the switch elements of the switching relay to the headlights and taillights. When the heating element causes the temperature of a switch element (76) to rise sufficiently, the switch element closes, forming an alternative path of current to the solenoid. When the ignition switch is opened, this path is maintained, ensuring continued flow of current to the headlights and taillights until the switch element cools sufficiently to open. The circuit is constructed for simplicity, economy, and substantially universal adaptability to existing vehicle electrical systems.

REFERENCES:
patent: 3514665 (1970-05-01), Chantstowich
patent: 3588591 (1971-06-01), Harris
patent: 3684916 (1972-08-01), Skinner
patent: 3706006 (1972-12-01), Miller
patent: 3963941 (1976-06-01), Banker

Affiliated with

Also associated with

Rating

Automatic light-extinguishing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic light-extinguishing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic light-extinguishing circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-768660