Safety latch includes an active member having a support; a thrust pin actuator with a movable thrust pin actuator element movable to and fro along an axis; a thrust pin having a proximate end attachable to the movable thrust pin actuator element such that the thrust pin can be moved to and fro along the axis with movement of the movable thrust pin actuator element, and a distal end; and a biasing element to bias the thrust pin in an extended position. Passive member includes a catch with a thrust pin receiving hole. When assembled, and the movable thrust pin actuator element is slid to and fro, at least the distal end of the thrust pin can penetrate into or be withdrawn from the thrust pin receiving hole to close or open the safety latch. It can be attached to a dump body, say, as part of a dump vehicle.

Safety latch includes an active member having a support; a thrust pin actuator with a movable thrust pin actuator element movable to and fro along an axis; a thrust pin having a proximate end attachable to the movable thrust pin actuator element such that the thrust pin can be moved to and fro along the axis with movement of the movable thrust pin actuator element, and a distal end; and a biasing element to bias the thrust pin in an extended position. Passive member includes a catch with a thrust pin receiving hole. When assembled, and the movable thrust pin actuator element is slid to and fro, at least the distal end of the thrust pin can penetrate into or be withdrawn from the thrust pin receiving hole to close or open the safety latch. It can be attached to a dump body, say, as part of a dump vehicle.

A control system for a dump truck or trailer having a telescoping hoist is disclosed. The control system includes an integrated electronic control unit which receives sensor information regarding at least a hydraulic pump, a power take-off, a first inclinometer and a second inclinometer and uses this information to send warning to a user display and to sends control information to at least a hydraulic fluid control valve and optionally other devices on the truck or trailer as well.

A control system for a dump truck or trailer having a telescoping hoist is disclosed. The control system includes an integrated electronic control unit which receives sensor information regarding at least a hydraulic pump, a power take-off, a first inclinometer and a second inclinometer and uses this information to send warning to a user display and to sends control information to at least a hydraulic fluid control valve and optionally other devices on the truck or trailer as well.

An apparatus for a dump truck includes a catch affixable to one of the tailgate and the open-box bed of the dump truck, a latch affixable to the other of the tailgate and the open-box bed of the dump truck, a face cam affixable to the chassis or the open-box bed of the dump truck, a follower fixed to the latch, and a return spring affixable to the other of the tailgate and the open-box bed, and coupled to the follower. The apparatus is useful for providing a secondary locking device by engaging a tailgate or door assembly on a dump truck.

An apparatus for a dump truck includes a catch affixable to one of the tailgate and the open-box bed of the dump truck, a latch affixable to the other of the tailgate and the open-box bed of the dump truck, a face cam affixable to the chassis or the open-box bed of the dump truck, a follower fixed to the latch, and a return spring affixable to the other of the tailgate and the open-box bed, and coupled to the follower. The apparatus is useful for providing a secondary locking device by engaging a tailgate or door assembly on a dump truck.

A unified hinge may comprise a hinge tube that is rigidly attached to a truck frame and a bed section of a truck bed and a tail section of the truck bed, each of the bed section and the tail section having opposing hinge barrels affixed thereto that concentrically align on the hinge tube. Similarly, a unified hinge may comprise one or more mounting barrels that are rigidly attached to a truck frame and a bed section of a truck bed and a tail section of the truck bed, each of the bed section and the tail section having opposing hinge barrels affixed thereto that concentrically align on the one or more mounting barrels; a hinge tube runs through the one or more mounting barrels and the opposing hinge barrels. The unified hinge allows the bed section and the tail section to independently pivot along the hinge tube.

A unified hinge may comprise a hinge tube that is rigidly attached to a truck frame and a bed section of a truck bed and a tail section of the truck bed, each of the bed section and the tail section having opposing hinge barrels affixed thereto that concentrically align on the hinge tube. Similarly, a unified hinge may comprise one or more mounting barrels that are rigidly attached to a truck frame and a bed section of a truck bed and a tail section of the truck bed, each of the bed section and the tail section having opposing hinge barrels affixed thereto that concentrically align on the one or more mounting barrels; a hinge tube runs through the one or more mounting barrels and the opposing hinge barrels. The unified hinge allows the bed section and the tail section to independently pivot along the hinge tube.

A tailgate apparatus for a dump body is described herein. The dump body includes a floor, a front wall coupled to and extending upwardly from the floor and two opposing side walls coupled to and extending upwardly from the floor. Each side wall is coupled to the front wall. The two side walls define an opening at a rear end of the floor. The tailgate apparatus includes a tailgate sized to cover the opening and two opposed side arms extending from the tailgate towards the front wall. Each side arm is pivotally coupled to a respective one of the side walls. The tailgate apparatus also includes a pair of linkages for linking the side arms to the side walls. The linkages enable the tailgate to pivot between a closed position where the tailgate covers the opening and an open position where the tailgate is positioned closer to the front wall than the opening.

A tailgate apparatus for a dump body is described herein. The dump body includes a floor, a front wall coupled to and extending upwardly from the floor and two opposing side walls coupled to and extending upwardly from the floor. Each side wall is coupled to the front wall. The two side walls define an opening at a rear end of the floor. The tailgate apparatus includes a tailgate sized to cover the opening and two opposed side arms extending from the tailgate towards the front wall. Each side arm is pivotally coupled to a respective one of the side walls. The tailgate apparatus also includes a pair of linkages for linking the side arms to the side walls. The linkages enable the tailgate to pivot between a closed position where the tailgate covers the opening and an open position where the tailgate is positioned closer to the front wall than the opening.