Control circuit system for automobiles

Details Control circuit system for automobiles Control circuit system for automobiles

1982-05-20

1985-07-30

Groody, James J.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307115, 200 6154, 340 22, H02G 300, H02J 100, H01H 900

Patent

active

045324328

ABSTRACT:
A control circuit system for an automobile comprises a plurality of command switches (including an electric horn switch) all provided on a steering wheel. A control circuit is provided to generate a control signal in response to each command signal from the switches, and a signal coupling element is provided to connect the switches and the control circuit through a single signal line conventionally used for the electric horn switch. Operation of the automobile horn is enabled through a normally-closed relay even when a power switch connecting the automobile battery and the control circuit is open, thereby eliminating continuous drain on the automobile battery by a dormant but powered control circuit.

REFERENCES:
patent: 4028620 (1977-06-01), Kitagawa et al.
patent: 4340824 (1982-07-01), Shaw
patent: 4386279 (1983-05-01), Yoshimi
patent: 4453088 (1984-06-01), Moore

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