US Patent 7478985 Locking member for pallet ramp safety retainers

A method and apparatus are disclosed for locking at least two safety retainers together. Each safety retainer has a pallet-attached base and a ramp-attached mating bracket. Each safety retainer includes a base and a bracket. Each bracket is coupled to a ramp that is can be removably attached to a pallet. Each base includes a retaining arm for locking the base to the bracket when the ramp is coupled to the pallet. A locking mechanism is capable of being temporarily coupled to a first retaining arm in a first safety retainer and a second retaining arm in a second safety retainer for locking the retaining arms together. The first and second retaining arms must operate as a single unit, and cannot be moved independently, when the locking mechanism is coupled to the first and second retaining arms. The first and second retaining arms operate independently as separate units when the locking mechanism is not coupled to the first and second retaining arms.