US Patent 7862326 Mold lock

A mold lock for a mold that includes a plurality of interlocking arrangements that are configured to provide at least a plurality of interlocks during mold closing. A male interlocking arrangement includes a head with a nose that has a recessed or offset portion that facilitates primary interlocking during mold closing. The nose can be configured with one or more spaced apart bosses that make contact with arms of a female interlocking arrangement at an initial point of contact that then facilitate mold alignment when a second point of contact is achieved.