| 摘要 |
A bumper has an elastic body shaped to fit on a conventional trailer coupler to prevent damage to the coupler to a towing vehicle during attachment of the coupler to a ball-type hitch on the vehicle. The body has side flanges with longitudinal grooves for receiving coupler lateral flanges and a transverse strap joined to the side flanges to retain the body on the coupler and prevent removal of the bumper when the coupler is attached to the ball-type hitch.
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