Motor vehicles – With means for promoting safety of vehicle – its occupant or... – By preventing unauthorized or unintended access or use
Patent
1978-04-27
1980-11-11
Silverstrim, John P.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
By preventing unauthorized or unintended access or use
70243, 70278, 70313, 307 10AT, B60R 2508
Patent
active
042327580
ABSTRACT:
Electrovalves are opened in automobile piping of a brake line, a clutch line and a fuel line by a current through normally open contacts of a plurality of control relays and through normally closed contacts of an interlocking relay. The control relays are operated by selected switches of a plurality of push-button switches while the interlocking relay is operated by the non-selected switches of the plurality of switches. The control relays are interconnected so that the selected push-button switches must be operated in a selected sequence. All the relays have holding circuits.
REFERENCES:
patent: 3174502 (1965-03-01), Howarth
patent: 3544804 (1970-12-01), Gaumer
patent: 3756341 (1973-09-01), Tonkowich
patent: 3818436 (1974-06-01), Hong
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