Container closure locking assembly

A container closure locking assembly, comprising:

• a plastic container blow molded from an injection molded plastic preform having a body portion for holding container contents, a lower closed end for supporting the container, an upper dispensing end including a neck and a round dispensing spout having a central axis, said spout extending upwardly from the neck and including an external closure thread, and the upper dispensing end also including a retaining flange and a rotational positioning formation;
• a plastic lock ring injection molded separately from the container and subsequently mounted and mechanically secured to the container, the plastic lock ring being positioned so as to extend around and be supported by the neck of the upper dispensing end below the external closure thread of the dispensing spout, said lock ring including retainers projecting radially inwardly for engaging the retaining flange of the upper dispensing end of the container to secure the lock ring to the container and generally prevent movement of the lock ring in the direction of the central axis of the dispensing spout, the lock ring including at least one external lock having an outer curved ramp surface of a radially ramped shape with respect to the central axis, the external lock including a lock surface that faces circumferentially with respect to the central axis, the external lock including an unlocking actuator for moving the lock surface thereof radially inward by manual movement of the unlocking acuator and the lock ring also including a rotational positioning formation that engages the rotational positioning formation of the container to rotatively position the lock ring and the lock surface thereof about the central axis;
• and
• a closure having an internal thread that is threaded onto the external thread of the dispensing spout to secure the closure and close the container, the closure having at least one internal lock having an inner curved ramp surface of a radially ramped shape with respect to the central axis, the internal lock of the closure also having a lock surface that faces circumferentially with respect to the central axis and is engaged with the lock surface of the external lock on the lock ring to prevent unthreading rotation of the closure from the dispensing spout, and the lock surface of the internal lock of the closure being disengaged from the lock surface of the external lock of the lock ring by inward manual movement of the unlocking actuator to permit unthreading rotation of the closure.

A container closure locking assembly, comprising:

• a plastic container molded from an extruded parison having a body portion for holding container contents, a lower closed end for supporting the container, an upper dispensing end including a neck and a round dispensing spout having a central axis, said spout extending upwardly from the neck and including an external closure thread, and the upper dispersing end also including a retaining flange and a rotational positioning formation;
• a plastic lock ring injection molded separately from the container and subsequently mounted and mechanically secured to the container, the plastic lock ring being positioned so as to extend around and be supported by the neck of the upper dispensing end below the external closure thread of the dispensing spout, said lock ring including upper retainers and lower retainers projecting radially inwardly for engaging the retaining flange of the upper dispensing end of the container to secure the lock ring to the container and generally prevent movement of the lock ring in the direction of the central axis of the dispensing spout, the lock ring including at least one external lock having an outer curved ramp surface of a radially ramped shape with respect to the central axis, the external lock including a lock surface that faces circumferentially with respect to the central axis, the external lock including an unlocking actuator for moving the lock surface thereof radially inward by manual movement of the unlocking acuator and the lock ring also including a rotational positioning formation that engages the rotational positioning formation of the container to rotatively position the lock ring and the lock surface thereof about the central axis;
• and
• a closure having an internal thread that is threaded onto the external thread of the dispensing spout to secure the closure and close the container, the closure having at least one internal lock having an inner curved ramp surface of a radially ramped shape with respect to the central axis, the internal lock of the closure also having a lock surface that faces circumferentially with respect to the central axis and is engaged with the lock surface of the external lock on the lock ring to prevent unthreading rotation of the closure from the dispensing spout, and the lock surface of the internal lock of the closure being disengaged from the lock surface of the external lock of the lock ring by inward manual movement of the unlocking actuator to permit unthreading rotation of the closure.