Abstract: A security device for a trailer hitch or similar article which engages with an outwardly extending peripheral flange around the trailer hitch or similar article, and which includes an element which extends into a coupling opening in the trailer hitch or similar article, thus precluding removal of the security device from the trailer hitch or similar article. A padlock is utilized to deter unauthorized removal of the security device from the trailer hitch or similar article, and the security device includes means to protect the shackle of the padlock from unauthorized removal.

Abstract: A security device for cargo doors and similar articles which utilizes a conventional padlock to secure the horizontally extending handle present on many conventional double cargo doors of cargo carrying vehicles. The security device includes a stationary base member which is mounted on the cargo door by carriage bolts or other conventional fasteners and a rotatable blocking member which is rotatably mounted on the cargo door above the stationary base member. The rotatable blocking member can be rotated in a plane parallel to the cargo door upwardly in relation to the stationary base member to allow the horizontally extending handle to be placed adjacent the stationary base member.

Abstract: A security device for a trailer hitch or similar article which engages with an outwardly extending peripherial flange around the trailer hitch or similar article, and which includes an element which extends into a coupling opening in the trailer hitch or similar article, thus precluding removal of the security device from the trailer hitch or similar article. A padlock is utilized to deter unauthorized removal of the security device from the trailer hitch or similar article, and the security device includes means to protect the shackle of the padlock from unauthorized removal.