Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1991-04-25
1993-11-30
Peng, John K.
Communications: electrical
Condition responsive indicating system
Specific condition
70DIG49, 200 6166, E05B 4506, H01H 2706
Patent
active
052669238
ABSTRACT:
An improved locking mechanism having a first electrode carried by at least one of the locking elements and a second electrode carried by the locking surface normally engageable by the locking elements when the locking mechanism is in its locked configuration, and an electrical tamper-detection circuit connected across the first and second electrodes and operative to generate an electrical signal response in the event that the first electrode is caused to engage the second electrode.
REFERENCES:
patent: 3596014 (1971-07-01), Erez
patent: 3986376 (1976-10-01), Lack
patent: 4186578 (1980-02-01), Sommer
patent: 4205542 (1980-06-01), Renda
patent: 4262506 (1981-04-01), Tobel
Guillot Robert O.
Hamrick Claude A. S.
Mullen Jr. Thomas J.
Opperman Craig P.
Peng John K.
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