A semi-trailer for use in hauling grain has four sides and two sloped cargo areas, each having a hopper funnel made of a continuous, unitary polymer material. A door below each hopper is driven by a linear actuator that is disposed above the level of the door. The trailer sidewalls are made of a composite material having inner and outer panels attached to a center panel by adhesive.

A semi-trailer for use in hauling grain has four sides and two sloped cargo areas, each having a hopper funnel made of a continuous, unitary polymer material. A door below each hopper is driven by a linear actuator that is disposed above the level of the door. The trailer sidewalls are made of a composite material having inner and outer panels attached to a center panel by adhesive.

An apparatus for measuring distance when moving a vehicle, for instance, for measuring how far to move a tractor of a tractor-trailer rig when sliding (e.g., tandem) axles of the trailer, for example, to equalize weight between wheels or axles of the rig. A scale is mounted on the vehicle with (e.g., evenly-spaced) indicia arranged in a line parallel to a forward or reverse direction of the vehicle. The scale is positioned on the vehicle where the driver, while driving the vehicle, can see the scale and can sight past the scale to a stationary visual reference located outside the vehicle (e.g., on the driving surface) to see how far the vehicle has moved. The scale may be on an elongated member which may be attached to the vehicle, for example, to a step below the driver.

An apparatus for measuring distance when moving a vehicle, for instance, for measuring how far to move a tractor of a tractor-trailer rig when sliding (e.g., tandem) axles of the trailer, for example, to equalize weight between wheels or axles of the rig. A scale is mounted on the vehicle with (e.g., evenly-spaced) indicia arranged in a line parallel to a forward or reverse direction of the vehicle. The scale is positioned on the vehicle where the driver, while driving the vehicle, can see the scale and can sight past the scale to a stationary visual reference located outside the vehicle (e.g., on the driving surface) to see how far the vehicle has moved. The scale may be on an elongated member which may be attached to the vehicle, for example, to a step below the driver.

The disclosed devices, systems and methods relate to a split-tilt deck trailer. A tilting deck and stationary deck are disposed in parallel on the trailer to provide a tilting deck for the loading of various equipment and providing an elongate stationary platform simultaneously.

A trailer coupler has a fixed frame portion that is connected to a moving frame portion with link arms. The link arms are attached to torsion components that are affixed to both the fixed frame portion and moving frame portion with the moving frame portion located between ends of the fixed frame portion. The moving frame portion has a resting position where the torsion components are at rest and a displaced position where external forces have caused the torsion components to move. The moving frame portion can be displaced through rotation or vertical movement by external forces.

An extendable trailer including a nose end for selectively securing the extendable trailer to a vehicle wherein the nose end includes an extendable frame portion. The extendable trailer also includes a tail end having a primary frame to support objects to be transported on the extendable trailer and a central tube member supported by the primary frame. The central tube member includes an inside portion. The extendable trailer further includes a telescopic tube member of the nose end that slidably engages the central tube member. The extendable trailer also includes a centralizer disposed on an insertion end of the telescopic tube member that engages with the inside portion of the central tube member to help centrally position the telescopic tube member in the central tube member when the telescopic tube member is extended into and out of the central tube member. A method of transporting objects using the extendable trailer. The method includes determining a desired length of the extendable trailer and positioning the telescopic tube member relative to the central tube member to achieve the desired length. The method also includes transporting objects on the extendable trailer.

An unmanned aerial vehicle (UAV), and specifically discloses a UAV transport box. The UAV transport box has a mounting frame, a box body, a driving device, and a control system. The box body has a bottom plate and a side plate, the bottom plate is fixedly installed on the mounting frame, the UAV is arranged on the bottom plate, and the side plate can be unfolded through the driving device, so that the side plate and the bottom plate are in the same plane to form an area which is large enough to provide a suitable take-off and landing platform for the UAV, and can realize the automatic opening and closing for the UAV transport box.

A trailer having a deck and a flip-over ramp. The deck and one side of the flip-over ramp are convertible from a flat position to a position with cradles that are configured to hold one or more round hay bales. The deck may tilt, and side rails may cooperate to form the cradle region. The flip over ramp may also pivot about a horizontal axis to form a pathway from a ground surface to the deck. Side rails may pivot both about a horizontal axis, and about a vertical axis near the flip-over ramp to allow clearance when the ramp is deployed.

A trailer tandem slide stopping device for facilitating positioning of a trailer tandem includes a guide pin, which insertable into a first hole of a plurality of holes positioned in an outer rail attached to a the trailer. The first hole is positioned past either a rearward or forward end of an inner rail of the tandem trailer. The guide pin abuts the rearward or forward end of the inner rail upon driving a semitruck hitched to the trailer in forward or reverse, respectively, to move the trailer tandem toward the rear or front of the trailer, respectively, at which point a locking pin of the trailer tandem is aligned with and positioned for insertion into a target hole of the plurality of holes. The target hole corresponds to a desired position of the trailer tandem relative to the trailer.