| 摘要 |
<p>An electric socket is provided with a lock to obstruct the operation of one or more outlets in the socket. The lock operates either to lock a switch in the OFF position, or to make it impossible to insert a plug into the socket. In the case of a double switched socket both systems can operate simultaneously so that if an operating plug is removed no plug can then be inserted into the same socket. In the case of both locking operations the actuator is a cam which rotates with the lock shaft. Where both operations are required two cams are needed, one of which is an eccentrically mounted rotary cam.</p> |
