Abstract: An automobile-RV trailer hitch, the first half of which is securely mounted to the rear underside of the automobile, and the second half of which is securely mounted to the underside of the trailer. When the trailer is attached to the automobile, the two hitch halves interlock. A locking rod is inserted horizontally to cause the hitch to act as a single unit. Horizontal rotation is prevented, but the trailer is able to pivot vertically around the locking rod to compensate for the trailer going over bumps in the road.

Abstract: A tractor-trailer coupling mechanism for a powered tow vehicle and unpowered trailer vehicle which eliminates jack-knifing. The coupling includes at least one extension or more on the trailer vehicle which is constructed to slide into a receptor channel or recesses in the powered vehicle. A locking or latching arrangement is attached at the front of the tractor vehicle. The result is that the tractor vehicle and the trailer vehicle are fixedly connected to each other as a single chassis vehicle, making the powered tractor vehicle and the trailer vehicle operate as one unit. An alternative arrangement would provide the channel on the trailer and the extension protruding from the powered tractor vehicle.