A lock has a housing with a hole. A lock post has an interior end fixed in the housing and an exterior end extruded out of the housing via the hole. The lock post has a lock portion at the exterior end thereof. Two close posts have interior ends received in the housing and a plate is connected to the...http://www.google.fr/patents/US7140210?utm_source=gb-gplus-shareBrevet US7140210 - Lock