Operating method for container-handling system involves transmitting release signal from release signal generator on spreader to release signal receiver near each intermediate coupling unit

摘要

The method involves raising an upper container (26I) suspended from a spreader (22) from a lower container (26II) after releasing intermediate coupling units (30) between upper and lower containers. In order to release the coupling units a release signal is transmitted from a release signal generator (70) on the spreader to a release signal receiver (30f) near each coupling unit. Independent claims are also included for the following: an arrangement for lifting a container from a lower container.