Patent attributes
A trailer drawbar has a housing with a cylindrical outer chamber and a cylindrical inner chamber separated from one another by a stop. First and second compressible bushings respectively fit in the outer and inner chambers. The bushings have aligned bores. A rod extends through the bores in the bushings. One rod end contains an annular base, which abuts the first bushing, and a drawbar eye. The other rod end is threaded. An annular seal is positioned on the rod adjacent to the second bushing. The first bushing has a length and compressibility such that the seal remains entirely within the inner chamber when the first bushing is compressed to a pre-determined level. The second bushing has a length and compressibility such that the first seal is not located completely inside of the inner chamber when the second bushing is compressed up to a second pre-determined level.
