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twistlock
A twistlock and corner casting together form a standardized rotating connector for securing shipping containers. The primary uses are for locking a container into place on container ship, semi-trailer truck or railway container train; and for lifting of the containers by container cranes and sidelifters.
==Description==
The twistlock was developed in Spokane, Washington in the 1950s by transport engineer Keith Tantlinger. The relative obscurity of this invention belies its importance to a more efficient world trade and transport, as the Tantlinger lock made handling and stacking standard containers much easier.
A major advantage of this approach to attachment is that containers, which may be stored or transported without being inspected for months at a time, do not require any maintenance in order to function effectively. Even with long term exposure to the weather the container remains as simple to move as ever. Only when corrosion is very extensive (to the extent of being easily visible) does the twistlock become dangerous to move the crate. The male part is placed on vehicles and equipment that are inspected very frequently, and will work with all standard containers.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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