Safeguard or lock device

Details Safeguard or lock device Safeguard or lock device

1979-12-13

1981-09-29

Hix, L. T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

180287, 361171, 361176, 340 64, B60R 2504

Patent

active

042925410

ABSTRACT:
A device for safeguarding an engine against unauthorized use, the device including a unit structure for housing the engine starter, the starter mechanism switch and a code signal receiver therein to prevent access thereto. The code signal receiver includes a decoder to determine an authorized preselected code signal combination, upon receipt of which, the decoder activates the starter mechanism switch. A code signal generator transmits the code signal combination to the code signal receiver upon receiving a proper code transmitter key therein. The code transmitter key is provided with a series of displayable sections thereon to determine the code signal combination. Preferably, the code signal receiver includes a time delay to block forwarding of a following code signal combination for a predetermined time after receiving any first code signal combination to foil tampering by an unauthorized person using a count generator.

REFERENCES:
patent: 3383513 (1968-04-01), Douglas
patent: 3634880 (1972-01-01), Hawkins
patent: 3796889 (1974-03-01), Fradkin et al.
patent: 3851504 (1974-12-01), Theobald
patent: 3870895 (1975-03-01), Lax et al.
patent: 3872435 (1975-03-01), Cestaro
patent: 3896345 (1975-07-01), Zink
patent: 3940738 (1976-02-01), Teeters

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