| 摘要 |
<p>A high security lock has a protective shell with a hole in it. A lock body is held within the shell by an end plate heaving a loop a round the body . A plug having an end flange is rotatable in the body and is pierced by a keyway defining an edge notch in the end flange. A guard plate is disposed in the hole and over to end of the plug and is arranged to rotate in the shell with the plug by a tab disposed in the edge notch so that a restricted opening through the guard plate is kept in alignment with the keyway.</p> |
