Cargo restraint system with spring fuse

A combined cargo delivery and logistics cargo restraint system comprising a pair of parallel guide rails for cargo-carrying pallets extending longitudinally along a floor of an aircraft which has a cargo-receiving and delivery opening, a single one of said rails at spaced points therealong being provided with pallet locks for releasably engaging pallets to hold them in positions along the guide rails, a logistics control means coupled to simultaneously move the pallet locks into a first position where said pallet locks will release pallets for movement either forward or aft of the aircraft and a second position where said locks will prevent either forward or aft movement of a pallet, a system of levers coupled to each of said locks, and a cargo-delivery control system including cam means for sequentially actuating each system of levers to move the pallet locks along the rail into a third position where the locks will prevent forward movement of a pallet but will permit aft movement of the pallet by movement of a lock against a biasing force of a spring acting on the lever system thereof;

• wherein each system of levers includes an actuator arm coupled by a uniball joint to a control arm, and a pivot shaft supported by a single one of said rails to interconnect said control arm and a pallet lock, and wherein said system further includes troughs formed in said floor of the aircraft, and means mounting said guide rails for pivotal movement from positions where they extend upwardly from the floor to positions where they are rotated downwardly into the troughs and form a flush surface with the remainder of the aircraft floor.