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Multiple attachment points for receiving universal adapters are retained by a relatively rigid structure in a generally rectangular orientation. The structure is rigidly attached to a structurally sturdy member such as the underframe of a vehicle. One arrangement of the attachment points employs fou

Multiple attachment points for receiving universal adapters are retained by a relatively rigid structure in a generally rectangular orientation. The structure is rigidly attached to a structurally sturdy member such as the underframe of a vehicle. One arrangement of the attachment points employs four slots which are oriented at the effective corners of a rectangle and parallel to the anticipated direction of main tension loading. These slots are arranged to receive extension arms of a bracket-like adapter to which any of a wide variety of accessories can be mounted. For a vehicle, the slot-retaining frame can be rigidly secured to the underframe between the vehicle body and the protective bumper, attached to or included within a surface of the bumper or even mounted upon the flat bed surface of the vehicle body. In yet another arrangement of the mounting points, an arrangement of bars is rigidly secured to a box-like structure which is in turn secured to the vehicle body. A pivotal and slidable clamping arrangement permits engaging of the bars so as to secure the adapter to the vehicle frame.

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In a bumper hitch system for releasably attaching accessories to the bumper of a vehicle, a mounting frame assembly rigidly attached to the bumper and including a plurality of narrow slotted passageways opening thereinto defined by sidewalls of a rectangular cross-section, said mounting frame assemb

In a bumper hitch system for releasably attaching accessories to the bumper of a vehicle, a mounting frame assembly rigidly attached to the bumper and including a plurality of narrow slotted passageways opening thereinto defined by sidewalls of a rectangular cross-section, said mounting frame assembly having bores extending through the longer sidewalls, said mounting frame assembly retaining said passageways in a generally rectangular configuration in which said passageways are located at the four corners of the rectangle, an adapter comprising a plurality of prongs each having a wide, flat rectangular cross-section sized for close fitting insertion within said slotted passageways and a hole in proximity to one end of each prong with said hole extending therethrough across the narrower dimension of the rectangular cross-section for aligning with the sidewall bores, means for attaching an accessory to the other end of said prongs, and releasable attachment means extending through the aligned said hole and said bores of the mounting frame assembly for releasably retaining each said prong against removal from the associated said passageway.