| 摘要 |
A safety fastener for ball and socket hitches of medium to heavy vehicles provides a base defining a channel to fit about a hitch tongue beam of a towing vehicle with holes in the base to receive the fastening bolt of a hitch ball to fasten the base and hitch ball on the hitch tongue. The base carries at least one collar for adjustable positioning of at least one vertical fastener arm by a pin fastener. The vertical fastener arm carries a horizontal fastening beam extending over the hitch beam carried by the ball to prevent removal of the hitch from the ball. Species provide one or two vertical fastening arms carrying the fastening beam. The pin fastener may carry a lock to prevent unauthorized removal of the hitch from the ball.
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