Security device

Details Security device Security device

1976-03-19

1977-03-15

Swann, III, Glen R.

Communications: electrical

Systems

Call station

340276, 340280, 3403091, G08B 2100, G08B 1300

Patent

active

040127320

ABSTRACT:
A security device includes an alarm that is actuated after a predetermined period of no human physical activity, which device includes a clock set to actuate the alarm after a predetermined period of inactivity, an activity sensor that resets the clock when human activity is sensed, and a means to sense an inanimate object, such as a set of keys, and which, when the inanimate object is absent, will not actuate the alarm when the predetermined time period has passed. There is also disclosed means to actuate the alarm when any activity is sensed if the inanimate object is absent.

REFERENCES:
patent: 2847656 (1958-08-01), Ricks
patent: 3803579 (1974-04-01), Compton
patent: 3911425 (1975-10-01), Muncheryan
patent: 3913092 (1975-10-01), Klingenberg
patent: 3929335 (1975-12-01), Malick

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