Freight transporting system with an interlock mechanism on the motor controller

Claim 1

A ROAD VEHICLE COMPRISING AN ELONGATED LONGITUDINALLY EXTENDING CHASSIS, AN ELONGATED LONGITUDINALLY EXTENDING PLATFORM MOUNTED ON SAID CHASSIS FOR VERTICAL MOVEMENT BETWEEN RESPECTIVE LOW AN D HIGH POSITIONS WITH RESPECT TO THE TOP OF SAID CHASSIS, MOTOR MEANS ININTERCONNECTING SAID CHASSIS AND SAID PLATFORM AND OPERATIVE SELECTIVELY TO MVOE SAID PLATFORM BETWEEN ITS LOW AND HIGH POSITIONS, A MANUALLY OPERABLE CONTROLLER HAVING LOW AND HIGH POSITIONS, MEANS CONTROLLED BY OPERATION OF SAID CONTROLLER INTO ITS LOW POSITION FOR GOVERNING SAID MOTOR MEANS TO MOVE SIAD PLATFORM INTO IS CORRESPONDING LOW POSITION AND CONTROLLED BY OPERATION OF SAID CONTROLLER INTO ITS HIGH POSITION FOR GOVERNING SAID MOTOR MEANS TO MOVE SAID PLATFORM INTO ITS CORRESPONDING HIGH POSITION, LATCH MECHANISM COOPERATING BETWEEN SAID CHASSIS AND SAID PLATFORM AND HAVING A LATCH POSITION LATCHING SAID PLATFORM IN ITS LOW POSITION TO SAID CHASSIS AND HAVING AN UNLATCH POSITION UNLATCHING SAID PLATFORM IN ITS LOW POSITION FROM SAID CHASSIS, A MANUALLY OPERABLE HANDLE HAVING A LATCH POSITION OPERATING SAID LATCH MECHANISM INTO ITS CORRESPONDING LATCH POSITION AND HAVING AN UNLATCH POSITION OPERATING SAID LATCH MECHANISM COCORRESPONDING UNLATCH POSITION, INTERLOCK MECHANISM COOPERATING BETWEEN SAID CONTROLLER AND SAID HANDLE AND HAVING A LOCK POSITION LOCKING SAID CONTROLLER IN ITS LOW POSITION AND AN UNLOCK POSITION UNLOCKING SAID CONTROLLER IN ITS LOW POSITION, AND MEANS CONTROLLED BY OPERATION OF SAID HANLDE INTO ITS LATCH POSITION FOR ACTUATING SAID INTERLOCK MECHANISM INTO ITS LOCK POSITION AND CONTROLLED BY OPERATION OF SAID HANDLE INTO ITS UNLATCH POSITION FOR ACTUATING SAID INTERLOCK MECHANISM INTO IS UNLOCK POSITION, WHEREBY SAID INTERLOCK MECHANISM PREVENTS OPERATION OF SAID CONTROLLER OUT OF ITS LOW POSITION AND INTO ITS HIGH POSITION WHEN SAID LATCH MECHANISM OCCUPIES ITS LATCH POSITION LATCHING SAID PLATFORM IN ITS LOW POSITION TO SAID CHASSIS.