Patent Number: 8,820,768

Title: High lock warning system for fifth wheel hitches

Abstract: The high lock warning system for fifth wheel hitches provides audible and/or visual warning to the operator of a towing vehicle in the event that the king pin of the trailer passes beyond the forward edge of the fifth wheel hitch plate of the towing vehicle during hitching operations. The system includes a panel pivotally attached to the forward portion of the fifth wheel. One or more warning devices are activated if the panel is deflected by the king pin during hitching operations, i.e., a high lock condition. The system may also include an indicator to show proper engagement of the king pin in the fifth wheel hitch. The high lock warning actuator panel may be secured in its normal position by a shear pin that breaks in the event of a high lock, and/or a spring to return the panel to its normal position after a high lock.

Inventors: Grizzle; Roger D. (Eden, GA)


International Classification: B60Q 5/00 (20060101); B60D 1/01 (20060101)

Expiration Date: 9/02/12018