Abstract: A sensor device for detecting whether a tractor and a trailer of a truck are connected includes a container having a plurality of tabs extending radially outwardly to engage an inside surface of a bearing plate of the trailer when the container is located in a hole in the bearing plate. A spring extends from a base of the container away from the face surface to bear upon an interior wall of the trailer to bias the tabs into contact with the inside wall when the container is located in the hole to maintain a position of the container therein. A sensor is also provided for sensing proximity of a ferrous material and being located in the container. The sensor senses proximity of ferrous material of a coupler carried by the tractor without sensing ferrous material of the bearing plate.

Abstract: A transportable rack comprises a first upright attached to a first base member, a rolling device attached to the first base member, a second upright attached to a second base member, and a central support member having a first end portion and a second end portion. The first end portion of the central support member is attached to the first base member, the second end portion attached to the second base member. A retractable beam member is slidably disposed within the central support member, the retractable beam member having a lift receiving portion.

Abstract: A transportable rack comprises a first upright attached to a first base member, a rolling device attached to the first base member, a second upright attached to a second base member, and a central support member having a first end portion and a second end portion. The first end portion of the central support member is attached to the first base member, the second end portion attached to the second base member. A retractable beam member is slidably disposed within the central support member, the retractable beam member having a lift receiving portion.

Abstract: A transportable rack comprising a first A-frame upright attached to a first base member, a rolling device rotatably attached to the first base member, and a second A-frame upright attached to a second base member. The transportable rack further includes a central support member having a first end portion and a second end portion, the first end portion attached to the first base member, the second end portion attached to the second base member. In addition, a retractable beam member is slidably disposed within the central support member, the retractable beam member having a lift receiving device.