| 摘要 |
A security device for a bottle having a neck fitted with a closure comprises a sleeve adapted to fit over the neck of the bottle and a catch member pivoted to the sleeve for movement between free and locking positions. The catch member has an inner portion which projects through an aperture in the sleeve, into the bore thereof, which inner portion is adapted to engage a shoulder of the bottle neck or an edge of the closure, thereby to resist removal of the sleeve from a bottle neck when the device has been fitted thereto. A magnetic armature is connected to the catch member such that an applied magnetic field will move the armature so as then to move the catch member to its free position and thereafter permit removal of the sleeve from the bottle. A housing encloses the release mechanism and also a radio-frequency or other security responder whereby unauthorized removal of a bottle carrying the security device from a protected area will sound an alarm.
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