A fifth wheel hitch may include a skid plate, and a retention system that is supported by the skid plate. The retention system is also operable to receive a coupling member of a towed vehicle to retain the coupling member within the retention system, where engagement of the coupling member with the retention system selectively positions the retention system in a locked and closed position.

A fifth wheel hitch may include a skid plate, and a retention system that is supported by the skid plate. The retention system is also operable to receive a coupling member of a towed vehicle to retain the coupling member within the retention system, where engagement of the coupling member with the retention system selectively positions the retention system in a locked and closed position.

A safety apparatus for a fifth wheel coupling having locking jaws arranged to detachably couple to a trailer having spring applied air brakes, the fifth wheel coupling comprising a locking component that is moveable between a first position whereat the locking jaws are in a coupled state and a second position whereat the locking jaws are in a decoupled state, the safety apparatus comprising a pneumatic valve arrangement pneumatically coupled to both a constant air pressure supply and an air park brake supply that supplies pressurised air to the spring applied air brakes, and a mechanical actuator mechanically coupled to the locking component and configured to mechanically actuate the pneumatic valve arrangement when the locking component moves from the first position to the second position, thereby causing the pneumatic valve arrangement to block flow in an air park brake supply line for preventing the spring applied air brakes from releasing.

A safety apparatus for a fifth wheel coupling having locking jaws arranged to detachably couple to a trailer having spring applied air brakes, the fifth wheel coupling comprising a locking component that is moveable between a first position whereat the locking jaws are in a coupled state and a second position whereat the locking jaws are in a decoupled state, the safety apparatus comprising a pneumatic valve arrangement pneumatically coupled to both a constant air pressure supply and an air park brake supply that supplies pressurised air to the spring applied air brakes, and a mechanical actuator mechanically coupled to the locking component and configured to mechanically actuate the pneumatic valve arrangement when the locking component moves from the first position to the second position, thereby causing the pneumatic valve arrangement to block flow in an air park brake supply line for preventing the spring applied air brakes from releasing.

A brazing connection includes a first component comprising a first material and including a first connection portion, a second component comprising a second material and including a second connection portion, a heating element that is electrically conductive and electrically resistant positioned between the first connection portion of the first component and the second connection portion of the second component, where the heating element is configured to transmit heat when conducting an electrical current, and a brazing material configured to melt when receiving heat from the heating element, thereby connecting the first component to the second component.

A brazing connection includes a first component comprising a first material and including a first connection portion, a second component comprising a second material and including a second connection portion, a heating element that is electrically conductive and electrically resistant positioned between the first connection portion of the first component and the second connection portion of the second component, where the heating element is configured to transmit heat when conducting an electrical current, and a brazing material configured to melt when receiving heat from the heating element, thereby connecting the first component to the second component.

A sensor device for a towing vehicle coupling with which a trailer vehicle is coupleable to a towing vehicle wherein the towing vehicle coupling has a coupling element for releasably coupling a coupling mating element, which elements are secured to the towing vehicle and the trailer vehicle, and when coupled rotate relative to each another about at least one joint rotational axis, forming a joint, wherein the sensor device has a follower which: is mounted on a bearing body such that it can rotate relative to the coupling element about a follower rotational axis; can be rotatably carried about the follower rotational axis by the rotation of the coupling mating element about the at least one joint rotational axis in order to sense a rotation of the coupling mating element relative to the coupling element about the at least one joint rotational axis, and wherein the sensor device has at least one sensor for sensing a respective rotational position of the follower relative to the bearing body in relation to the follower rotational axis. s

A sensor device for a towing vehicle coupling with which a trailer vehicle is coupleable to a towing vehicle wherein the towing vehicle coupling has a coupling element for releasably coupling a coupling mating element, which elements are secured to the towing vehicle and the trailer vehicle, and when coupled rotate relative to each another about at least one joint rotational axis, forming a joint, wherein the sensor device has a follower which: is mounted on a bearing body such that it can rotate relative to the coupling element about a follower rotational axis; can be rotatably carried about the follower rotational axis by the rotation of the coupling mating element about the at least one joint rotational axis in order to sense a rotation of the coupling mating element relative to the coupling element about the at least one joint rotational axis, and wherein the sensor device has at least one sensor for sensing a respective rotational position of the follower relative to the bearing body in relation to the follower rotational axis. s

A fifth wheel system includes a fifth wheel configured to couple to a kingpin of a towed trailer such that vibrations are generated when the fifth wheel couples to the kingpin. A sensor in operative association with the fifth wheel and configured to sense the vibrations and generates vibration data. A controller receives the vibration data and processes the vibration data to detect a presence or an absence of a predetermined vibration component that occurs when the fifth wheel properly couples to the kingpin. An indicator indicates proper coupling of the fifth wheel to the kingpin when the predetermined vibration component is present.