The present technology describes systems and methods for power coupling of a tractor-trailer system. The technology may include a robotic arm, an end effector, a coupling tool, and a tool resting rack. An electrical outlet on a trailer may be coupled with a tool under control of the end effector and positioning of the robotic arm. The end effector may include a housing, a motor, a clutch, and a drive shaft. A tool coupled to the end effector may include an electro-mechanical (EM) coupler. The EM coupler may include a housing, an electric plug, a lid lifter, a lead screw, and a servomotor.

A hitch insert set, hitch system, and method of coupling a hitch cover to a hitch receiver are generally disclosed herein. The hitch system includes a hitch receiver designed to couple to a vehicle, with the hitch receiver defining a receiver opening. The hitch system further includes a hitch cover comprising a tube portion and a cover portion that substantially covers the receiver opening. At least one hitch insert from a hitch insert set couples to the hitch receiver and the tub portion, in use, with the at least one hitch insert filling a gap between the hitch receiver and the tube portion of the hitch cover. The tube portion coupled coupled within the receiver opening such that the tube portion is at least partially retained in place by the at least one hitch insert.

A weight distribution hitch system comprising a vehicle attachment member comprising a forward end configured to rigidly attach to a vehicle, and a rearward end extending rearwardly toward a trailer, the rearward end comprising an upper portion comprising a trailer attachment member configured to pivotally attach to a coupler of the trailer, and a lower portion configured to receive a moment bar; a moment bar having a modulus of elasticity, the moment bar comprising a moment bar forward end attached to the lower portion of the rearward end of the vehicle attachment member so as to prevent rotation about a horizontal axis, and a moment bar rearward end; a tension member comprising a top end configured to be supported by a frame member of the trailer, and a bottom end configured to support the rearward end of the moment bar; and wherein, when the tension member is in tension, it imposes an upward force on the moment bar rearward end, which, in turn, imposes a forward moment on the vehicle; and wherein the modulus of elasticity of the moment bar is low enough wherein the modulus of elasticity of the moment bar is low enough to reduce displacement of the vehicle when the vehicle and trailer are not parallel is disclosed.

The present invention discloses a trailer connector sleeve lock, comprising a lock cover, a lock tongue piece and a lock hole plate, wherein the lock hole plate is rotatably installed on the lock cover and is provided with a lock hole, and the lock hole plate rotates to the lock cover to serve as the side wall of the lock cover, they are spliced together to form a sleeve lock structure, wherein an opening is arranged above the sleeve lock structure, and the opening is smaller than the size of the lock tongue piece, wherein the lock tongue piece is provided with a lock tongue and is clamped in the sleeve lock structure, wherein the lock tongue extends out of the lock hole and is fixed through an additional lock. The advantageous effects of the present invention are that: the lock cover and the lock hole plate are spliced into a sleeve lock structure, and then the lock tongue piece is clamped in the sleeve lock structure, the lock tongue in the lock tongue piece extends out of the lock hole plate, and then the trailer is locked in such a manner that the lock tongue is fixed by the additional lock, and the installation is convenient. The four sides of the lock tongue piece are completely covered by the lock cover, and the lock tongue is inserted into the lock hole plate, so that a thief cannot damage the sleeve lock by cutting the lock tongue. The damage difficulty is high, the time-consuming is long, and the protection effect is good.

A king pin coupler assembly of a fifth wheel coupling. A coupler plate has a king pin aperture therein. A king pin is positioned to extend axially through the king pin aperture of the coupler plate. The king pin has a first portion with a neck for engaging a fifth wheel of the fifth wheel coupling, the first portion extending to a first side of the coupler plate. The king pin has a second portion on a second side of the coupler plate and welded to the coupler plate. A shielding apparatus is secured to one or both of the king pin and the coupler plate. The shielding apparatus includes a cover sealed to the first side of the coupler plate. The cover extends over the first portion of the king pin to shield the first portion of the king pin during liquid immersion of the king pin coupler assembly.

An apparatus that includes an elastic sleeve; an integrally formed top cover that completely (or at least substantially completely) covers one end of the elastic sleeve; an integrally formed elongated clamp feature that extends outward from across a top surface of the top cover, wherein the elongated clamp feature has a C-shaped cross section; an integrally formed elongated strap that is connected at a proximal end to an edge of top cover and that has an elastic loop formed at a distal end of the elongated strap.

A hitch cover is shown and described. The hitch cover may include a base having first and second surfaces, the second surface having at least one engagement member attached thereto. The hitch cover may also include a mounting bracket selectively attached to the at least one engagement member of the base and extending from the second surface wherein the mounting bracket is configured to selectively engage a hitch receiver tube.

A flexible decorative display device for attachment to a hitch receiver. The flexible display device is formed from a bendable sheet having a distal front surface, a proximal rear surface, an outer shaped outline, and interior shaped edges. The interior shaped edges form both a central opening to accommodate the trailer hitch receiver and a tongue. The tongue has tongue alignment cavity edges that define an interior tongue pin-receiving cavity. The tongue bends backwardly at a flexure line to fold back over the outside of the receiver tube, aligning the tongue pin-receiving cavity with the pin-receiving hole of the receiver.

A safety device 100 for a hitch assembly 10 is provided, the safety device 100 containing a cover member or hitch clip 20 for securing a retainer pin 18 of the hitch assembly 10.

A vehicle hitch cover for covering a hitch ball of a vehicle hitch is disclosed, the hitch cover including a ball cover portion for concealing the hitch ball and a secondary cover portion providing a mount for the ball cover portion. The ball cover portion includes at least one movable cover that is movable relative to the hitch ball of the vehicle hitch. The at least one movable cover is movable between a closed position for fully covering and concealing the hitch ball and an opened position for exposing the hitch ball. The secondary cover portion is in turn removably attached to the vehicle hitch.