Communications: electrical – Audible indication – Ultrasonic pest control
Patent
1988-04-28
1989-10-03
Orsino, Joseph A.
Communications: electrical
Audible indication
Ultrasonic pest control
3404255, B60Q 500
Patent
active
048719919
ABSTRACT:
A horn circuit for an automotive vehicle features a transistor amplifying circuit which functions to amplify an output current of a horn switch. With the help of this transistor amplifying circuit, the horn switch makes the horn circuit operative in order to actuate the horn, regardless of depressive strength applied to the switch operation. A diaphragm or membrane switch which is a small current type is usable, whereby a low-cost and highly reliable horn circuit for the automotive vehicle is realized.
REFERENCES:
patent: 3670174 (1972-06-01), Sakakibara
patent: 4438425 (1984-03-01), Tsuchida et al.
patent: 4486742 (1984-12-01), Kudo et al.
patent: 4532432 (1985-07-01), Mizuno et al.
Kanai Makoto
Noda Kazushi
Orsino Joseph A.
Toyoda Gosei Co,., Ltd.
Tumm Brian R.
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