Abstract: A trailer security device includes a housing configured to permit placement over a trailer hitching device with the housing enclosing an enlarged perimeter segment of a trailer hitch. An enlarged perimeter segment is defined as an end portion of the trailer hitching device that is relatively larger in its perimeter or cross-sectional dimension than an adjoining or adjacent relatively narrow or reduced perimeter segment. A slot is formed on face of the housing and fits over a reduced perimeter segment of the trailer hitch while the enlarged perimeter segment of the trailer hitch will not pass through the slot. The hitch security device also includes a housing closure configured to close the entry aperture of the housing in a locking engagement.

Abstract: A trailer hitch security device includes a hitch receiver housing for placement over the receiver end of the trailer hitch with the receiver end of the trailer hitch extending through a hitch receiver slot formed in a first face of the hitch receiver housing. The hitch security device also includes housing closure member which is configured to enclose an open face of the hitch receiver housing in a locking engagement. In one embodiment of the relative dimensions and configurations of the hitch receiver slot and receiver end of the trailer hitch are such that withdrawal of the receiver end of the trailer hitch through the hitch receiver slot is impossible. Alternatively, the receiver end of the trailer hitch may be configured originally or by modification to include a whole or partial collar member or an ear attached for limiting withdrawal of the receiver end of the trailer hitch through the hitch receiver slot.