| 摘要 |
<p>A locking device has a non-magnetic pin and a button, the non-magnetic pin having a base and a post projecting perpendicularly therefrom, extending to a free end, with an indented portion close to the free end. The but ton is an enclosed non-magnetic unit, having a hole at the lower surface adapted to receive the free end of the post, and also enclosing a plurality of locking plat es each supported at an outer portion by a compressible support material, and adapted to retain the pin at the indented portion in a locked position within the button, b ut to rotate upwards and release the pin in response to a magnetic force directed at t he upper surface of the button. The magnetic force can be applied by a magnet mounted within a protective shield adapted to fit over the button.</p> |
