A disclosed trailer hitch device includes an upper member to restrain the movement of the trailer hitch and a lower member to connect to the upper member and to connect to a vehicle. The upper member is rotatably connected to the lower member. The upper member is substantially U-shaped. The lower member is also substantially U-shaped and substantially symmetrical to the upper member. The upper and lower members include a respective side section, a respective arm section and a respective connecting plate configured to restrain the upper member from rotating with respect to the lower member. The upper connecting plate is connected to the lower connecting plate with a fastening device. A single component step washer includes a flanging washer concentric with a collar washer, the flanging washer comprising a ball mounting surface. The collar washer is configured to fit rotatably inside the hitching aperture of the lower member.

.[.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 device for secure tire and wheel protection including: a control module, the control module including: an interface for connecting the control module to a factory alarm of a vehicle; a tilt sensor; and a glass break sensor.

An idling stop control device includes an authenticator, a storage, a getting-off detector, and an engine restart permitter. The authenticator is installed in a vehicle, performs authentication via a wireless communication with a mobile device, and repeatedly performs, while the vehicle travels, an authentication operation at predetermined intervals. The storage stores result and time of authentication as the authentication history during travel. The engine restart permitter determines permission or prohibition of restart of the engine in accordance with the authentication history and getting-off information, permits restart of the engine when the authentication is successful and permits, in a case where the authentication fails, restart of the engine when a history of success of authentication has been stored in the storage during travel and the getting-off is not detected after the authentication has been successful.

Trailer theft is a widespread problem, and existing locks have failed to solve the problem for a number of reasons. Some locks require permanent modification of a trailer jack, while others are easy to break into. The present invention provides a detachable trailer jack locking assembly including a retention shell couplable to a trailer jack body. The retention shell is sized and shaped to surmount an upper end of an outer tube of the trailer jack. The retention shell also includes a slot configured to accept a handle of a lifting assembly on the trailer jack. The assembly includes an attachment point disposed on the outer tube of the trailer jack. A lock is adapted to secure the retention shell against the outer tube by coupling with the attachment point. When engaged, the handle is immobilized within the slot, thereby rendering the lifting mechanism of the trailer jack inoperable.

Devices and systems for securing and locking tractor trailer support legs in the down position are described herein. A securing pin passing through one of the support legs of a trailer while in the down position prevents the trailer legs from being raised. The pin can be locked in place such that only authorized users may remove the pin, raise the support legs, and move the trailer. A variety of kits for retrofitting existing trailers with securing devices are also provided.

A device for secure tire and wheel protection including: a control module, the control module including: an interface for connecting the control module to a factory alarm of a vehicle; a tilt sensor; and a glass break sensor.

A lock for securing semi-trailers. More specifically, the lock of the invention secures the landing gear assembly of a semi-trailer. The lock is made up of a main body, a detachable locking plate, and a lock mechanism. The main body includes a post located in a crankshaft securing portion of the main body. The crankshaft securing portion includes a plurality of crankshaft guides and opposite facing lips which in combination provide a slot to accommodate the detachable locking plate. The post extends outward from an interior surface of the main body. The detachable locking plate fits over at least a portion of the crankshaft securing portion of the main body. The lock mechanism is in operable communication with the detachable locking plate.

A disclosed trailer hitch device includes an upper member to restrain the movement of the trailer hitch and a lower member to connect to the upper member and to connect to a vehicle. The upper member is rotatably connected to the lower member. The upper member is substantially U-shaped. The lower member is also substantially U-shaped and substantially symmetrical to the upper member. The upper and lower members include a respective side section, a respective arm section and a respective connecting plate configured to restrain the upper member from rotating with respect to the lower member. The upper connecting plate is connected to the lower connecting plate with a fastening device. A single component step washer includes a flanging washer concentric with a collar washer, the flanging washer comprising a ball mounting surface. The collar washer is configured to fit rotatably inside the hitching aperture of the lower member.

An anti-theft device of an operational vehicle, in which an operation of cancelling an anti-theft mode is simply and easily performed, is provided. The anti-theft device includes: a travel regulation unit (70) which maintains, when the anti-theft mode is set, the operational vehicle (1) in a state where the operational vehicle (1) cannot travel; and a wireless operation terminal (80) which wirelessly operates an operational device (20). When the wireless operation terminal (80) communicates with a controller (70), the wireless operation terminal (80) performs identification authentication, and when the identification authentication between the wireless operation terminal (80) and the controller (70) is successfully performed, the travel regulation unit (70) cancels the anti-theft mode. Since the wireless operation terminal (80) is only made to communicate with the controller (70), and thus the anti-theft mode is cancelled, the operation of cancelling the anti-theft mode is simply and easily performed.