ALARM Russian patent published in 1994 - IPC

Abstract RU 2017220 C1

FIELD: guard equipment. SUBSTANCE: alarm uses an electromechanical sensor, which has the first switch with a self-shutter and break contact, as well as the second switch with locking in the two extreme positions. The switches respond to displacement of the movable component. No false operations of the alarm occur, since the alarm changes to the guard mode only after the switch is closed, which happens at door closing. EFFECT: enhanced reliability. 1 dwg

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RU 2 017 220 C1

Authors

Bugrov A.V.

Dates

1994-07-30—Published

1991-06-27—Filed