A travel trailer is provided having no jack on hitch tongue, and fifth wheel-type landing gear mounted inside the front cap, for inclined extension toward the ground when used, and a more secure, twist-resistant mounting bracket for the jack tubes mounted within the front cap.

A vehicle leveling system includes a jack adapted to be mounted to a vehicle frame without modifying the vehicle frame. In a particular embodiment, the jack includes a first bracket adapted to urge against the bottom and side surfaces of a member of the frame and configured to be fastened to a member of the frame through a manufacturer-provided aperture in the frame. The jack additionally includes a second bracket to couple the first bracket to the jack. In a more particular embodiment, the first bracket includes a horizontal adjustment feature, and the second bracket includes a vertical adjustment feature.

The invention relates to an axle lifting device comprising a load bearing support body; a base portion proximate a lower end of the support body, wherein an upwardly curved portion extends from the base portion, the upwardly curved portion including a plurality stepped formations for frictionally engaging the ground; and an axle seat proximate an upper end of the support body, to support or accommodate the axle of the vehicle or trailer, wherein the axle lifting device can rotate on the curved portion between a lowered position and a lifted position, wherein the axle seat extends substantially upright with respect to the ground with the base portion engaging the ground, for lifting the axle off the ground, with the stepped formations functionally and sequentially engaging the ground as the axle lifting device moves between the lowered and lifted positions

An apparatus comprising a mobile carrier operable for transporting a reel of oilfield tubing across ground. The mobile carrier comprises a frame comprising a first frame portion, a second frame portion, and a central frame portion extending between the first and second frame portions. The first, second, and central frame portions define an opening for receiving the reel. The mobile carrier also comprises a locking mechanism operable to engage and rotate the reel within the opening, and a plurality of wheels supporting the frame on the ground. The plurality of wheels comprises a plurality of first wheels operably connected to the first frame portion and a plurality of second wheels operably connected to the second frame portion. The opening interposes the plurality of first wheels and the plurality of second wheels.

The technology relates to autonomous vehicles having hitched or towed trailers for transporting cargo and other items between locations. Aspects of the technology provide a smart hitch connection between the fifth-wheel of a tractor unit and the kingpin of a trailer. This avoids requiring a person to make physical pneumatic and electrical connections between the fifth-wheel and kingpin using external hoses and cables. Instead, the necessary connections are made internally, autonomously. For instance, the fifth-wheel may provide air pressure via one or more slots arranged on a connection surface, and the trailer is configured to receive the air pressure through one or more openings on a contact surface of the kingpin. An electrical connection section of the fifth-wheel may also provide electrical signals and/or power to an electrical contact interface of the kingpin. Rotational information about relative alignment of the trailer to the tractor unit may also be provided.

The technology relates to autonomous vehicles having hitched or towed trailers for transporting cargo and other items between locations. Aspects of the technology provide a smart hitch connection between the fifth-wheel of a tractor unit and the kingpin of a trailer. This avoids requiring a person to make physical pneumatic and electrical connections between the fifth-wheel and kingpin using external hoses and cables. Instead, the necessary connections are made internally, autonomously. For instance, the fifth-wheel may provide air pressure via one or more slots arranged on a connection surface, and the trailer is configured to receive the air pressure through one or more openings on a contact surface of the kingpin. An electrical connection section of the fifth-wheel may also provide electrical signals and/or power to an electrical contact interface of the kingpin. Rotational information about relative alignment of the trailer to the tractor unit may also be provided.

A trailer stabilizing device for stabilizing a parked freight trailer, the trailer stabilizing device comprising a frame separate from the support frame of the parked freight trailer, the stabilizing device frame having mounted thereto wheels and a hitch, the stabilizing device including a repositionable jack.

A trailer stabilizing device for stabilizing a parked freight trailer, the trailer stabilizing device comprising a frame separate from the support frame of the parked freight trailer, the stabilizing device frame having mounted thereto wheels and a hitch, the stabilizing device including a repositionable jack.

A vehicle leveler spacer and method of using the vehicle leveler spacer that may be selectively attached to a retracted leveler of a vehicle, such as a trailer or motor home. The spacer at least partially supports the vehicle upon extension of the leveler to the ground. The spacer includes at least one connector to selectively connect the spacer to the retracted leveler. The spacer may include one or more drain holes. The connector may be a magnet, strap, clamp, or another mechanical connector. The top surface of the spacer may include a rim along its perimeter configured to retain a pad of a leveler. The spacer may form a gap between the bottom surface and a supporting surface, e.g. the ground, when the spacer is connected to a retracted leveler. The connectors enable the spacer to be quickly attached or removed from a retracted leveler of a vehicle.

A vehicle leveler spacer and method of using the vehicle leveler spacer that may be selectively attached to a retracted leveler of a vehicle, such as a trailer or motor home. The spacer at least partially supports the vehicle upon extension of the leveler to the ground. The spacer includes at least one connector to selectively connect the spacer to the retracted leveler. The spacer may include one or more drain holes. The connector may be a magnet, strap, clamp, or another mechanical connector. The top surface of the spacer may include a rim along its perimeter configured to retain a pad of a leveler. The spacer may form a gap between the bottom surface and a supporting surface, e.g. the ground, when the spacer is connected to a retracted leveler. The connectors enable the spacer to be quickly attached or removed from a retracted leveler of a vehicle.