Communications: electrical – Continuously variable indicating – With meter reading
Patent
1981-04-02
1983-11-01
Crosland, Donnie L.
Communications: electrical
Continuously variable indicating
With meter reading
340 64, 34082569, 34082564, 340345, 340354, 340696, 455 31, 455 38, 290DIG3, 375 69, 307 10AT, 290 38C, H04Q 700, F02N 1112
Patent
active
044132611
ABSTRACT:
The engine ignition circuit on a motor vehicle is controlled by an electronic switch which is part of a receiver/controller unit on the vehicle. A separate self-contained transmitter unit generates a seven digit coded address at a certain baud rate which modulates an RF carrier of a certain frequency. In the receiver/controller unit, if the baud rate and the carrier frequency of the transmitted signal are correct, the coded address is compared with a stored coded address. If they match, the electronic switch is closed, enabling the vehicle engine to be started. The usual ignition switch on the vehicle must be closed before the receiver/controller unit can be effective. The receiver/controller unit remains on for a minute or two after the ignition switch is opened.
REFERENCES:
patent: 3403381 (1968-09-01), Haner
patent: 3648174 (1972-03-01), Fukata
patent: 3756341 (1973-09-01), Tonkowich et al.
patent: 3987408 (1976-10-01), Sassover et al.
patent: 4090089 (1978-05-01), Morello et al.
patent: 4158874 (1979-06-01), Ellsberg
patent: 4180043 (1979-12-01), Kawamura
patent: 4192400 (1980-03-01), McEwan
patent: 4227588 (1980-10-01), Biancardi
patent: 4233642 (1980-11-01), Ellsberg
patent: 4236594 (1980-12-01), Ramsperger
patent: 4240516 (1980-12-01), Henderson et al.
Crosland Donnie L.
Glaeser Arthur F.
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