Audible turn signal canister unit

Details Audible turn signal canister unit Audible turn signal canister unit

1991-08-23

1993-06-08

Ng, Jin F.

Communications: electrical

Land vehicle alarms or indicators

External signal light system

340474, 340457, 307 108, B60Q 126

Patent

active

052183408

ABSTRACT:
An audible turn signal canister unit for automobiles incorporates an audible alarm in the form of a unitary, self-contained module which can be plugged into the existing socket in the automobile in place of a standard flasher unit. The alarm is a pure tone in the mid-speech frequency range (e.g. 1000 to 2500 Hz) in order to be more readily heard over background noise or by hearing impaired individuals. Optionally, the unit can be provided with a time delay circuit in the form of an electronic counter that is reset each time that the turn signal switch is turned on or closed in order to establish the beginning count for the activation of the alarm a predetermined time interval after the turn signal unit is activated.

REFERENCES:
patent: 2210619 (1940-08-01), Farrand
patent: 2896190 (1959-07-01), Gallaro et al.
patent: 2958071 (1959-03-01), Siefke
patent: 3315226 (1964-11-01), Fernekes
patent: 3806868 (1974-04-01), Portman
patent: 3964019 (1976-06-01), Wethe et al.
patent: 4754566 (1988-06-01), Fluhr et al.
patent: 4933665 (1990-06-01), Bull et al.

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