Container corner lock for locking a shipping container into position

A lock for securing upper and lower superimposed shipping containers in place, said lock comprising:

• a vertical housing having a top portion and a bottom portion, the top portion having a shape fitting in a dedicated opening in a corner casting of the upper container, and the bottom portion having a shape fitting in a dedicated opening in a corner casting of the lower container;
• said housing comprising a first and a second housing part;
• and said first housing part having a side opening at a lower end of the bottom portion;
• a first hook member pivotally mounted within the housing and having a hook end that can be moved out and moved back through the side opening to couple the lock to and uncouple the lock from the corner casting;
• a shaft mounted in the housing and operatively connected to said hook member to either lock the hook member in a moved-out position of said hook end or permit the hook member to move between the moved-out position and a moved-back position of said hook end;
• a locking bar fixed to the shaft and upon movement of the shaft being movable between a locking position, where the locking bar engages a locking surface of the hook member, and a free position, where the locking bar is out of engagement with the hook member;
• and
• said top portion of the housing having a neck and there above a head comprising a retaining flange arranged to provide a retaining function when the top portion is fitted into said dedicated opening in the corner casting of the upper container.