Abstract: A motor-driven trailer swivel jack is described that includes a detachable steering assembly. The steering assembly is fastened to the jack by both electrical and mechanical fasteners. The mechanical fastener allows the steering assembly to freely pivot in the vertical direction, which allows the user to maintain a grip on the steering as the jack moves over rough terrain. The mechanical fastener provides a rigid connection in the horizontal direction, which allows steering forces to be transferred to the jack without loss. The electrical connector is mounted between the motor and its power source. All the wiring necessary to connect the motor to the power source and the switch to control the motor is located in, or attached to, the removable steering assembly. When the steering assembly is removed, the de-energized motor effectively brakes the wheel of the jack, which complements the absence of a steering mechanism to make the jack difficult to accidentally move or tamper with.

Abstract: A tool for cutting tubular members has a rotatable cutting assembly adapted for mounting on the end of a tool body. The cutting assembly includes a rotatable base member having two support elements which support two cutting heads on the base member. The support elements are each pivotally mounted on the base member such that rotation of the base member causes each support element to pivot around an independent axis. Each support element has one or more weights located on one side of the axis and a cutting head located on the other side of the axis. Centrifugal force developed during rotation of the base member cause the weights of each support element to swing radially outwardly while the cutting heads pivot radially inwardly into cutting contact with the tubular member and cutting same.