Audio indicator for a motor vehicle direction signal circuit

Details Audio indicator for a motor vehicle direction signal circuit Audio indicator for a motor vehicle direction signal circuit

1989-01-18

1990-05-08

Orsino, Joseph A.

Communications: electrical

Land vehicle alarms or indicators

External signal light system

340457, B60Q 134

Patent

active

049242083

ABSTRACT:
An audio indicator is provided for a motor vehicle direction signal circuit of the type including a battery and a turn signal switch connecting the battery to at least one indicator lamp through a set of switchable contacts in a plug-in timer can, and with structure for intermittently opening and closing the contacts to flash the indicator lamps. The audio indicator has an electrically operated sound generating device with a substantially greater series resistance than the indicator lamps, and that is connected in parallel with the contacts of the timer can. When the timer can contacts are closed, the indicator lamps are "on", and current is shorted through the contacts such that the sound generating device is "off". When the timer can contacts are open, the indicator lamps are "off", and substantially all of the voltage from the battery appears across the sound generating device and the sound generating device is "on". The audio indicator is connected between the timer can and its receptacle by means of a thin connector bridged by prongs extending through the connector effecting a plug-in connection of the timer can and the turn signal circuit of the motor vehicle.

REFERENCES:
patent: 2896190 (1959-07-01), Gallaro et al.
patent: 3315226 (1967-04-01), Fernekes
patent: 3343123 (1967-09-01), Troesh
patent: 3806868 (1974-04-01), Portman
patent: 4196415 (1980-04-01), Haar et al.
patent: 4499453 (1985-02-01), Right
patent: 4754256 (1988-06-01), Fluhr et al.

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