| 摘要 |
<p>A key for unlocking a magnetically attractable locking mechanism retained within the interior of an anti-theft security device. The key comprises a housing which retains a dipole magnet therein. The dipole magnet is of a specifically designed cross-sectional shape configured to be complementary to a recess in the body of the security device. The shape of the magnet permits it to only enter the recess in one orientation and to bring only the appropriate one of the north or south magnetic poles into the proximity of the locking mechanism. The dipole magnet is movable in the housing between an extended position where at least a portion thereof protrudes from the housing, and a retracted position where the magnet is withdrawn entirely into the housing. The magnet is mounted on a spring-biased slide in the housing that is activated to move the magnet between the extended and retracted positions.</p> |
