Security lock system

Details Security lock system Security lock system

1978-10-25

1979-12-11

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

200 6167, 200 6193, G08B 1306

Patent

active

041785878

ABSTRACT:
A security lock system of the type primarily intended for signalling unauthorized opening of protected fixtures. The security lock system includes a dead bolt for engaging the fixture to be protected and a switch electrically connected to an alarm system. The dead bolt operatively engages the switch so as to energize the alarm upon an unauthorized removal of the dead bolt from the protected fixture. The alarm system is preferably energized by a direct current, and the security lock system may be utilized to generate both audible and silent type alarms.

REFERENCES:
patent: 3197588 (1965-07-01), Baldwin et al.
patent: 3938121 (1976-02-01), Jamison
patent: 4024526 (1977-05-01), Banner

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