Methods, apparatus, systems and articles of manufacture are disclosed for a modular double pin load sensor coupled to a hitch receiver. An example disclosed apparatus to be coupled to a receiver tube includes a crossbar interface to be coupled to a crossbar of a hitch, a pin adapter coupled to the crossbar interface, a first load-sensing pin disposed within the pin adapter, and a second load-sensing pin disposed within the pin adapter.

A device for detecting the position of a first or second vehicle to be coupled together, having a sensor device which can be arranged on the first or second vehicle and which detects at least one reference point of the other second or first vehicle using sensors. A device for detecting the position of a first or second vehicle to be coupled together, said device allowing an operationally reliable and precise coupling regardless of present environmental influences. The sensor device has at least one transceiver unit, and the at least one reference point can be equipped with a transponder which reflects a radio signal of the transceiver unit.

A caravanning vehicle system includes a lead vehicle having an engine and at least one trailing vehicle having an electric motor. The at least one trailing vehicle is non-mechanically connected to the lead vehicle. The lead vehicle includes a power transfer system that is configured to transfer electric power, wirelessly, to the at least one trailing vehicle.

A personal watercraft (PWC) is provided. The PWC includes a body having a bottom portion, a top portion covering the bottom portion, and a storage space disposed between the top and bottom portions; and a power train disposed on or in the body. The power train includes a motor, a battery, a controller, an impeller, and an impeller water pump, and is configured for moving the body through water. Further, the body and the power train collectively weigh about 150 pounds or less.

A personal watercraft (PWC) is provided. The PWC includes a body having a bottom portion, a top portion covering the bottom portion, and a storage space disposed between the top and bottom portions; and a power train disposed on or in the body. The power train includes a motor, a battery, a controller, an impeller, and an impeller water pump, and is configured for moving the body through water. Further, the body and the power train collectively weigh about 150 pounds or less.

A walk-behind tractor has an increased ground clearance to define a plant receiving space that has a greater height than a conventional walk-behind tractor having a straight axle. The walk-behind tractor has trailing drop arms from a frame that carry wheel axles that result in an elevated height of a driveshaft. The elevated driveshaft increases the ground clearance for taller plants to pass therebeneath during operation of the walk-behind tractor which would otherwise be too tall to pass below a conventional straight axle walk-behind tractor.

A walk-behind tractor has an increased ground clearance to define a plant receiving space that has a greater height than a conventional walk-behind tractor having a straight axle. The walk-behind tractor has trailing drop arms from a frame that carry wheel axles that result in an elevated height of a driveshaft. The elevated driveshaft increases the ground clearance for taller plants to pass therebeneath during operation of the walk-behind tractor which would otherwise be too tall to pass below a conventional straight axle walk-behind tractor.

A slide-out undercarriage mounted on an underside of a first trailer pulled by a highway tractor. The slide-out undercarriage is adapted for attaching a rear of the first trailer to a front of a second trailer. The slide-out undercarriage includes a fixed undercarriage frame mounted on an underside of a first trailer. A front axle with front wheels is mounted on a front axle frame and a rear axle with rear wheels is mounted on a rear axle frame. The rear axle frame includes a fifth wheel adapted for engaging a king pin on the front of the second trailer. A pair of first slide out tubes are attached to the front axle frame. A pair of second slide out tubes are attached to the rear axle frame. The first and second slide out tubes provide for allowing an operator of the first trailer to adjust the front and rear axles in various load positions under the first trailer when pulling the second trailer.

A vehicular trailering assist system includes at least one camera disposed at a trailer hitched to a hitch of a vehicle, and an electronic control unit (ECU). The ECU determines, during a first stage of a calibration maneuver of the vehicle and trailer, image coordinates of at least one ground feature point. The ECU, responsive to determining image coordinates of the at least one ground feature point, estimates orientation parameters of the camera based at least on the determined image coordinates and known intrinsic camera parameters. Responsive to estimating the orientation parameters of the camera, and based on the determined parameters of the camera, the ECU determines location of the at least one camera at the trailer.

A vehicular trailering assist system includes at least one camera disposed at a trailer hitched to a hitch of a vehicle, and an electronic control unit (ECU). The ECU determines, during a first stage of a calibration maneuver of the vehicle and trailer, image coordinates of at least one ground feature point. The ECU, responsive to determining image coordinates of the at least one ground feature point, estimates orientation parameters of the camera based at least on the determined image coordinates and known intrinsic camera parameters. Responsive to estimating the orientation parameters of the camera, and based on the determined parameters of the camera, the ECU determines location of the at least one camera at the trailer.