https://pham-hansson.hubstack.....net/15-amazing-facts
Hook Locks For Trucks, Vans and Skip-Loaders The Crosby Group has a large selection of hook locks available for vans, trucks and skip-loaders. We offer clevis self-locking hooks to prevent pinching; ball-bearing hooks that swivel for better side stability and lighter weight; and galvanized hooks to resist corrosion. The performance of the hook-lock mechanism was analyzed using a combination of an algorithm for numerical continuance and bifurcation theories. Nine state variables