The present disclosure relates to a system for transporting articles or loads, the system being formed by at least one carriage comprising a platform provided with at least two axles supporting wheels, and a carrying vehicle, wherein the carrying vehicle is a self-propelled vehicle comprising a platform that can be slid underneath one of the carriages, the platform comprising means for lifting the carriage high enough to prevent contact of the wheels with the ground.

A convex wheel chock includes a contact surface generally facing a vehicle tire, a support element connected to the contact surface to transfer a tire load from the contact surface, and a base portion coupled to the support element to provide structural support to the wheel chock and transfer the tire load to a ground surface. The contact surface includes a convex surface to be engaged by the tire, extending generally upwards from the base portion to the support element, and a concave extension surface joined to an upper end of the convex surface.

A convex wheel chock includes a contact surface generally facing a vehicle tire, a support element connected to the contact surface to transfer a tire load from the contact surface, and a base portion coupled to the support element to provide structural support to the wheel chock and transfer the tire load to a ground surface. The contact surface includes a convex surface to be engaged by the tire, extending generally upwards from the base portion to the support element, and a concave extension surface joined to an upper end of the convex surface.

A hand lift system for positioning a wheel and tire to be placed on a vehicle hub, the system being made up of two primary components. A first paddle component provides a shovel shaped lever to be placed under the tire to be lifted up to the vehicle hub, with a handle grip to operate the lever arm. A second component provides a solid wedge chock on which the paddle component is placed to act as a fulcrum to the paddle component lever, or to act as a support once the tire is lifted to the appropriate height. The paddle component doubles as a tool for shifting the spare tire or flat tire into place. The chock component doubles as a wheel block for either a tire still on the vehicle or a spare tire that has been rolled to the side of the vehicle for use.

A frame of a vehicle dolly includes a wheel cradle opening to receive a wheel of a vehicle to be towed. A hinged member is pivotally attached to the frame and is movable between an open position and a closed position to form part of a wheel cradle. A hinge activation device contacts the wheel within the wheel cradle opening and responsively moves the hinged member toward the closed position. The frame of the vehicle dolly is vertically slidably coupled to an axle assembly such that the frame can be raised and lowered. An extension member may extend from the frame and receive a tow truck stinger member, wherein the frame can be raised or lowered under motive force of the stinger member.

A frame of a vehicle dolly includes a wheel cradle opening to receive a wheel of a vehicle to be towed. A hinged member is pivotally attached to the frame and is movable between an open position and a closed position to form part of a wheel cradle. A hinge activation device contacts the wheel within the wheel cradle opening and responsively moves the hinged member toward the closed position. The frame of the vehicle dolly is vertically slidably coupled to an axle assembly such that the frame can be raised and lowered. An extension member may extend from the frame and receive a tow truck stinger member, wherein the frame can be raised or lowered under motive force of the stinger member.

Wheel chock systems for use at loading docks and other locations are described herein. In some embodiments, the wheel chock systems can include a wheel chock assembly that is positionable in contact with a vehicle wheel to restrain the vehicle at a loading dock. The wheel chock assembly can include a sensor target, and a corresponding sensor can be mounted to, for example, an outer wall of the loading dock or a wheel chock storage cradle mounted to the outer wall. In operation, the sensor can emit a wireless signal (e.g., an electromagnetic signal) that is reflected off of the sensor target and received back by the sensor when the wheel chock has been positioned in a blocking relationship relative to the vehicle wheel to restrain the vehicle at the loading dock. The sensor can be operably connected to a loading dock signal system (e.g., a signal light system) that displays appropriate signals to loading dock personnel based on detection of proper wheel chock placement. In other embodiments, wheel chock systems can include other types of devices for wirelessly communicating wheel chock placement information to loading dock systems. Such device types can include, for example, Bluetooth, Wi-Fi, RFID, etc.

A trailer for towing vehicles and related methods is presented. The disclosed trailer can be configured for towing certain three-wheeled vehicles and include a ramp, a front wheel retaining member, and rear wheel plates. The trailer may be configured to receive a three-wheeled vehicle, and upon receipt of the front wheel at the front wheel retaining member and the rear wheels at the rear wheel plates, transition from a first position with the ramp in a lowered configuration to a second position with the ramp in a raised and locked configuration, wherein the weight of the vehicle being towed may be used to both raise the ramp and maintain the ramp in a secured, raised configuration.

A trailer for towing vehicles and related methods is presented. The disclosed trailer can be configured for towing certain three-wheeled vehicles and include a ramp, a front wheel retaining member, and rear wheel plates. The trailer may be configured to receive a three-wheeled vehicle, and upon receipt of the front wheel at the front wheel retaining member and the rear wheels at the rear wheel plates, transition from a first position with the ramp in a lowered configuration to a second position with the ramp in a raised and locked configuration, wherein the weight of the vehicle being towed may be used to both raise the ramp and maintain the ramp in a secured, raised configuration.

A vehicle restraint system for an auto-rack railroad car which includes an active chock and an anchor chock configured to co-act to secure a vehicle in the auto-rack railroad car. In various embodiments, each chock has a chock body including a substantially diamond shaped elongated tube which includes four integrally connected elongated walls. In various embodiments, for each chock, various components of that chock extend substantially along longitudinal axis that lie in the same or substantially the same vertical plane as the apex and trough of the substantially diamond shaped elongated tube of the chock body. The active and anchor chocks: (a) have a lower height than known commercially available vehicle restraints; (b) have a smaller width than known commercially available vehicle restraints; (c) position the strap and the torque tube closer to the tire of the wheel than any known commercially available vehicle restraints; (d) take up a smaller area of each safe zone adjacent to the wheel than known commercially available vehicle restraints; (e) provide a greater strength to size ratio than known commercially available vehicle restraints; and (f) are easy to operate, install, and remove.