Abstract: A swivel joint assembly, preferably having a full range of rotational movement, can include a body pipe and a cooperating tail pipe that fit together for form a fluid passage. A sealing element and rotational assist mechanism can be interposed between the interior surface of the body pipe and the exterior surface of the cooperating tail pipe. An electrical connector, such as a spring plunger, can extend through the bore hole in the body pipe and has a first portion in effective electrical communication with the body pipe and a second portion in effective electrical communication with the tail pipe.

Abstract: A spring tension assembly, which includes a support member for attaching an adjustment assembly to the loading arm. The adjustment assembly can be mounted adjacent the first end of the support member and preferably is configured for engaging the first end of the spring. The adjustment assembly preferably comprises at least two rotatable gears having an interlocked meshed arrangement. An arm assembly can be mounted adjacent the second end of the support member, and configured for engaging the second or other end of the spring. A link arm can have one end attached to the arm assembly and a second end attached to the loading arm.