Abstract: A handrail assembly for a tank trailer and a yoke assembly forming a part thereof. Handrail assembly provides a safety device for an operator walking along a top wall of the tank trailer. The handrail assembly includes a top rail, a plurality of vertical members, a safety wire and, in most instances, a bottom rail. Each yoke assembly secures one of the top and bottom ends of the vertical members to either of the top and bottom rails or to a mounting bracket on the tank. Each yoke assembly includes a base member engaged partially in a bore of the vertical member, and a cradle member engaged with an exterior all of the top or bottom rails or mounting bracket. Base and cradle members are secured together by a pivot pin. Fluid-actuated cylinders extending between the vertical members and the tank move the handrail assembly between collapsed and expanded positions.

Abstract: A retractable stair assembly for a vehicle includes a track assembly mounted on a vehicle frame beneath a workbed, a step assembly, and first and second pivot assemblies that engage the track and step assemblies together. The step assembly moves between a storage position where it is disposed between tracks of the track assembly, and an operational position where it extends outwardly from the tracks, through an aperture in the vehicle's wall panel, and angles downwardly toward the ground. A foldable handrail on the step assembly moves between a collapsed position and an extended position. The handrail is in the extended position when the step assembly is operational and folds to the collapsed position when the step assembly is stored. A door is engaged with the track assembly and covers the aperture when the step assembly is stored. A flange extends from the door and supports a license plate thereon.

Abstract: A handrail assembly for a tank trailer and a yoke assembly for the same. Handrail assembly provides a safety device for an operator walking along a top wall of the tank trailer. The handrail assembly includes a top rail, a plurality of vertical members, a safety wire and, sometimes, a bottom rail. Each yoke assembly secures one of the top and bottom ends of the vertical members to either of the top and bottom rails or to a mounting bracket on the tank. Each yoke assembly includes a base member engaged partially in a bore of the vertical member, and a cradle member engaged with an exterior wall of the top or bottom rails or mounting bracket. Base and cradle members are secured together by a pivot pin. Fluid-actuated cylinders extending between the vertical members and the tank move the handrail assembly between collapsed and expanded positions.

Abstract: A retractable stair assembly for a vehicle includes a track assembly mounted on a vehicle frame beneath a workbed, a step assembly, and first and second pivot assemblies that engage the track and step assemblies together. The step assembly moves between a storage position where it is disposed between tracks of the track assembly, and an operational position where it extends outwardly from the tracks, through an aperture in the vehicle's wall panel, and angles downwardly toward the ground. A foldable handrail on the step assembly moves between a collapsed position and an extended position. The handrail is in the extended position when the step assembly is operational and folds to the collapsed position when the step assembly is stored. A door is engaged with the track assembly and covers the aperture when the step assembly is stored. A flange extends from the door and supports a license plate thereon.

Abstract: A handrail assembly for a tank trailer and a yoke assembly for the same. Handrail assembly provides a safety device for an operator walking along a top wall of the tank trailer. The handrail assembly includes a top rail, a plurality of vertical members, a safety wire and, sometimes, a bottom rail. Each yoke assembly secures one of the top and bottom ends of the vertical members to either of the top and bottom rails or to a mounting bracket on the tank. Each yoke assembly includes a base member engaged partially in a bore of the vertical member, and a cradle member engaged with an exterior wall of the top or bottom rails or mounting bracket. Base and cradle members are secured together by a pivot pin. Fluid-actuated cylinders extending between the vertical members and the tank move the handrail assembly between collapsed and expanded positions.