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Why You Should Install a Hook Lock Hook locks will stop thieves from stealing the contents of your van by securing it to the door of the vehicle. They also reduce the risk of work-site accidents caused by defective spring latches on traditional sling hooks, which fail to close when not under load. This paper makes use of bifurcation and numerical continuation theory to study the motion characteristics of a particular kind of hook lock mechanism. The effects of the weight of the landing gear and locking sprin
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