| 摘要 |
The use of a shock absorber bushing combination to accommodate various size ball ands and tow rings when towing large heavy industrial trailers. The shock absorber bushing combination can be cylindrically-shaped and adapted to have an interior hollow dimension to easily slide over the ball. Its length is adapted to extend at least to a height above the centerline of the ball and preferably so its top surface is aligned relatively close to the height of the ball. On or more if the shock absorber bushings has a flanged portion at its bottom side that is dimensioned in thickness and width to provide some vertical movement shock absorbing effect due to the action of the tow ring bouncing up and down when hitting bumps in the road surface.
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