Electronic lock and key system

Details Electronic lock and key system Electronic lock and key system

1975-06-02

1977-07-19

Chamblee, Hugh R.

Animal husbandry

Feeding device

Timer-controlled

119 29, A01K 502

Patent

active

040361780

ABSTRACT:
An electronic lock and key system is provided for controlling access. A passive key provides selective access without having a self contained power source. In a passive transponder arrangement, a passive electronic key processes induced or radiated electronic signals to generate a transponder signal for controlling access.

REFERENCES:
patent: 3465724 (1969-09-01), Broadbent
patent: 3541995 (1970-11-01), Fathauer
patent: 3753421 (1973-08-01), Peck
patent: 3844273 (1974-10-01), Polson

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