US Patent 10112451 Anti-theft trailer having a removable tongue

The present invention relates to a removable trailer coupler that may be used to prevent trailer theft. One end of the coupler includes a connector with a unique pattern of indentations and/or protrusions. The unique pattern corresponds to a pattern of protrusions and/or indentations located on a connector on the end of the tongue of a trailer. If the pattern of protrusions and indentations match, the coupler may be slid onto and connected to the trailer tongue. If an attempt is made to use a different coupler, the unique pattern of the indentations will not match, and the coupler will not be able to attach to the tongue. Without a coupler the trailer cannot connect to a tow hitch and the trailer cannot be towed.