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Why You Should Install a Hook Lock A hook lock will prevent thieves from stealing the contents of your van by securing it to the door of the vehicle. They also reduce the risk of workplace accidents caused by defective spring latches on standard sling hooks that fail to snap shut when not under load. This paper makes use of numerical continuation and bifurcation theory to study the motion characteristics of a type of hook lock mechanism. The influence of the weight of the landing gear and the locking spring parameters are analyzed in detail
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