Abstract: 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thrust pin actuator element is slid to and fro, at least the distal end of the thrust pin can penetrate into or be withdrawn from the thrust pin receiving hole to close or open the safety latch.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.

Abstract: 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thrust pin actuator element is slid to and fro, at least the distal end of the thrust pin can penetrate into or be withdrawn from the thrust pin receiving hole to close or open the safety latch.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.

Abstract: The frameless end dump fifth wheel trailer includes a cargo container. A rear axle and wheels support the rear portion of the cargo container. A hydraulic cylinder is pivotally attached to the front portion of the container. A piston rod of the hydraulic cylinder is pivotally attached to a kingpin plate assembly. A kingpin is secured to the plate assembly. A tension frame assembly is pivotally attached to the plate assembly and to the center portion of the container. Two mast members are secured to the plate assembly. A pair of kingpin plate control arms have forward ends each of which is pivotally attached to one of the masts and rear ends pivotally attached to the center portion of the cargo container. A flat bottom surface of the kingpin plate is held in a substantially horizontal position by the plate control arms.

Abstract: The frameless end dump fifth wheel trailer includes a cargo container. A rear axle and wheels support the rear portion of the cargo container. A hydraulic cylinder is pivotally attached to the front portion of the container. A piston rod of the hydraulic cylinder is pivotally attached to a kingpin plate assembly. A kingpin is secured to the plate assembly. A tension frame assembly is pivotally attached to the plate assembly and to the center portion of the container. Two mast members are secured to the plate assembly. A pair of kingpin plate control arms have forward ends each of which is pivotally attached to one of the masts and rear ends pivotally attached to the center portion of the cargo container. A flat bottom surface of the kingpin plate is held in a substantially horizontal position by the plate control arms.