US Patent 10046612 Hitch noise prevention device

A receiver hitch includes a receiver with a rearward opening for receiving a forward end of a mount shank. The receiver has a side hole for receiving a hitch pin and a bottom hole for receiving a clamping bolt. The bottom hole is disposed forward of the side hole. When the mount shank is disposed in the receiver tube with the hitch pin inserted, tightening the clamping bolt urges a portion of the mount shank forward of the hitch pin upward into engagement with an upper interior surface of the receiver tube and also urges a portion of the mount shank rearward of the hitch pin into engagement with a lower interior surface of the receiver tube. in this configuration, movement of the mount shank within the receiver tube is reduced.