Security system for cigarette display case

Details Security system for cigarette display case Security system for cigarette display case

1991-03-08

1993-07-20

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

221 2, 221 3, 340526, 340529, 340539, G08B 2100

Patent

active

052297497

ABSTRACT:
The system includes optical detectors, a control microprocessor, and an alarm. The detectors optically detect the presence of cartons within the shelf exit openings and emit carton-present signals upon such detection The microprocessor is responsive to the signals and activates an alarm when a preselected detector signal pattern is observed. In the preferred embodiment, the alarm patterns include four signals within 15 seconds or one signal having a duration of 6.5 seconds.

REFERENCES:
patent: 4007853 (1977-02-01), Bahneman
patent: 4155457 (1979-05-01), Wilbert
patent: 4358756 (1982-11-01), Morel et al.
patent: 4528553 (1985-07-01), Hastings et al.
patent: 4629090 (1986-12-01), Harris et al.
patent: 4791411 (1988-12-01), Staar
patent: 4819015 (1989-04-01), Bullivant et al.
Declaration of Daniel J. Yenglin of Nov. 22, 1991 with Exhibits 1-10.

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