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(11) | EP 0 963 714 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Alarm device |
(57) An antitheft alarm device has an electric circuit 21 for generation of audible alarm
and a supporting mechanism 42 for a flexible cord 6 formed between an upper and lower
face plates 2, 3. The circuit 21 has a switch 26 comprising a stationary terminal
35 and a movable terminal 34 biased by a spring to be engaged with the stationary
terminal 35. The flexible cord 6 detachably held by the mechanism 42 normally maintains
the movable terminal 34 to be disengaged with the stationary terminal 35. After the
cord 6 is detached, the movable terminal 34 engages with the stationary terminal 35
and consequently the audible alarm is generated. |