Fully automatic twistlock

This is fully automatic locking and unlocking twistlock. Comparing with existing automatic containter locks it is working much easier, faster and has great stability. Construction is similar to standard twistlock, mounting too. When transport machine comes than it push a pin which moves full mechanizm of lock and open it. When machine leaves a containter than the mechanizm automaticly close the lock. That is my idea of fully automatic twistlock which could work very well. Only it needs to calculate power of springs (to do not be opened during transport by disturbances from waves etc), height of a pin comparing with transport machine sizes and some material strenght.