Theft prevention apparatus

Details Theft prevention apparatus Theft prevention apparatus

1988-08-19

1990-08-07

Dolinar, Andrew M.

Internal-combustion engines

Igniters

Sparkers

180287, 307 105, 439511, 439911, 70DIG46, B60R 2504, F02P 1104, H01R 3108

Patent

active

049458728

ABSTRACT:
A disabling device for electronic circuits includes a female connector with an easily accessible front surface and an inaccessible rear surface. A large array of contact pairs are found in the female connector. A predetermined number of input/output wires join the female connector in series with the circuit across randomly selected contact pairs in the array. A number of non-functional dummy wires also connect in the array to further complicate the non-uniform connection pattern. When a male connector containing an internal arrangement of jumper wires is inserted into the female connector, the jumper wires short across the proper contact pairs and close the circuit. Subsequent removal of the male element again opens and disables the circuit.

REFERENCES:
patent: 1393822 (1921-10-01), Parker
patent: 3004170 (1961-10-01), Greenspan
patent: 3644745 (1972-02-01), Bell
patent: 3907060 (1975-09-01), Burton et al.
patent: 3915542 (1975-10-01), Schou-Kjeldsen
patent: 4037577 (1977-07-01), Gallo
patent: 4071007 (1978-01-01), Arix
patent: 4300495 (1981-11-01), Trevino et al.
patent: 4452197 (1984-06-01), Weber
patent: 4545343 (1985-10-01), Cook et al.

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