A locking mechanism for securing the cover of a thin-walled box to the box frame. The locking mechanism includes a clip bracket adapted to engage a wall of the box frame, a lock body adapted to latch to the clip bracket and engage the box cover, a locking member carried by the clip bracket and adapted...http://www.google.es/patents/US7377134?utm_source=gb-gplus-sharePatente US7377134 - Ringless meter lock
