A connecting system and a method for connecting a towing vehicle to a semitrailer includes a first plug unit configured to be fixed to a rotor of a semitrailer unit rotatably mounted on the semitrailer unit about an axis of rotation and having a first coupling portion, and a second plug unit having at least one mounting portion configured to be attached to a coupling plate of a commercial vehicle and a second coupling portion, wherein the first and second coupling portions are configured to be coupled together along a coupling axis such that the coupling axis is substantially parallel to the axis of rotation and spaced from the axis of rotation, and such that the first coupling portion is displaceable relative to the rotor and/or the second coupling portion is displaceable relative to the mounting portion along the coupling axis to engage or disengage the respective opposite coupling portion.

A trailer lock can be used as an anti-theft device to secure a mating feature of a trailer, such as a king pin, against unauthorized hookups by tractors. The trailer lock can include a base plate for mounting on a wall of a trailer; one or more swing arms, which swing arms are pivotally connected to the base plate; and an engagement tube pivotally connected to the swing arms, which engagement tube defines an engagement feature integrally formed therein, such as a hollow recess, which engagement feature is capable of fitting to a mating feature of the trailer, such as a king pin. When the engagement feature is fitted to the mating feature of the trailer (for example, when an engagement tube with a hollow recess is positioned such that the king pin is within the hollow recess), it can prevent the mating feature from engaging a corresponding mating feature of a tractor, such as a fifth wheel.

The present invention concerns systems, a kit and methods for monitoring coupling of a vehicle and a trailer or a trailer and another trailer. The system includes two sensors associated with a turntable of a towing vehicle, said sensors consisting of: a contact sensor configured to detect when a skid plate of a vehicle to be towed is in contact with the turntable; and a locking sensor configured to detect when the locking mechanism is in a locked configuration. The system further including a controller operatively connected to the two sensors and configured to receive output signals from the contact sensor and the locking sensor and to determine whether safe coupling has been achieved based on the output signals.

.[.An easy to use trailer anti-theft device that forms an integral part of said trailer comprising a front exterior wall mounted locking mechanism having a rotatable lock bar extending therefrom with the lock bar having an upper arm pivotally and swivelably connected to a lower swing bar that can be unlocked and moved from a stored position to a downwardly depending blocking position. The lock bar has a partially rotative lower swing arm that under force extends under the trailer substantially in the direction of the trailer king pin..]. .Iadd.A trailer lock assembly can include a housing mounted on a front wall of a trailer, an upper arm operably connected to the housing, and a swing arm pivotally connected to the upper arm. The swing arm is capable of pivoting under the bottom of the trailer in order to prevent a tractor's fifth wheel from engaging the trailer's king pin. The swing arm can also be swivelably connected to the upper arm to compensate for angular swing arm movement when a tractor attempts to hook up with the trailer from an angle..Iaddend.

A trailer lock can be used as an anti-theft device to secure a mating feature of a trailer, such as a king pin, against unauthorized hookups by tractors. The trailer lock can include a base plate for mounting on a wall of the trailer; a swing bar pivotally connected to the base plate; and an engagement bar pivotally connected to the swing bar, which engagement bar includes an engagement feature, such as a ring, capable of fitting to the mating feature of the trailer. When the engagement feature is fitted to the mating feature of the trailer (for example, when a ring is placed over a king pin), it can prevent the mating feature from engaging a corresponding mating feature of a tractor, such as a fifth wheel.

A security lock system for a fifth wheel hitch is system that restricts access to the connection between a fifth wheel hitch and a truck bed. The system includes a receiver lock, a fifth wheel hitch, a first sleeve, a second sleeve, a lock engagement channel, and a key. The receiver lock shields a securing mechanism of the fifth wheel hitch. The receiver lock connects with a base frame of the fifth wheel hitch through the lock engagement channel. The first sleeve and the second sleeve uphold the receiver lock against the lock engagement channel. A retractable locking bolt and a locking assembly are connected to each other with the key. The retractable locking bolt and the locking assembly remain stationary as the retractable locking bolt includes a first tubular body and a first stopper, and the locking assembly includes a second tubular body and a second stopper.

A connecting system and a method for connecting a towing vehicle to a semitrailer includes a first plug unit configured to be fixed to a rotor of a semitrailer unit rotatably mounted on the semitrailer unit about an axis of rotation and having a first coupling portion, and a second plug unit having at least one mounting portion configured to be attached to a coupling plate of a commercial vehicle and a second coupling portion, wherein the first and second coupling portions are configured to be coupled together along a coupling axis such that the coupling axis is substantially parallel to the axis of rotation and spaced from the axis of rotation, and such that the first coupling portion is displaceable relative to the rotor and/or the second coupling portion is displaceable relative to the mounting portion along the coupling axis to engage or disengage the respective opposite coupling portion.

A parked freight trailer stabilizer and restraint comprising: (a) a kingpin receiver configured to lock onto a kingpin of a parked freight trailer; (b) a jack operatively coupled to the kingpin receiver, the jack repositionable between a retracted position and an extended position; (c) a tail hold operatively coupled to the kingpin receiver, the tail hold repositionable between a stowed position and a restraining position, the tail hold configured to engage a ground mount; and, (d) a transport receiver configured to engage a transport vehicle.

A method for locking and releasing a securing device of a vehicle coupling of a vehicle includes switching the securing device between a locked state and a released state by a control command output by an authorization unit where the authorization unit outputs the control command after receiving an initiation command transmitted to the authorization unit by an interface and where a wireless communication interface and a local physical interface are useable as the interface. Sensor data, generated by a sensor that monitors surroundings of the vehicle, is transmitted via the wireless communication interface to a control center. The initiation command is transmitted to the vehicle by the control center via the wireless communication interface as a function of the sensor data. When there is no communication connection between the control center and the vehicle, it is only possible to output the initiation command via the local physical interface.

A parked freight trailer stabilizer and restraint comprising: (a) a kingpin receiver configured to lock onto a kingpin of a parked freight trailer; (b) a jack operatively coupled to the kingpin receiver, the jack repositionable between a retracted position and an extended position; (c) a tail hold operatively coupled to the kingpin receiver, the tail hold repositionable between a stowed position and a restraining position, the tail hold configured to engage a ground mount; and, (d) a transport receiver configured to engage a transport vehicle.