US Patent 9649983 Combination running board and sidestep having a linear drive

Running board assembly for a motor vehicle having a passenger cab and a box. The running board assembly includes a linear actuator assembly partly disposed within a housing assembly, a running board operably coupled to the linear actuator assembly and movable relative to the housing assembly between a stowed position tucked underneath the vehicle, a cab entry position generally outwardly from the vehicle to support a user entering or exiting the passenger cab, and a box side step disposed generally outwardly from the vehicle and rearward of the cab entry position to provide a user with side access to the box, and a motor operably coupled to the linear actuator assembly for driving the linear actuator assembly in opposing first and second directions. The linear actuator assembly converts rotary input to linear motion to cause a drive arm having a linkage assembly to move the running board between the positions.