| 摘要 |
A step assembly (10) including a top step plate (12) for mounting to a ball mount tongue (32), and clamped thereto by means of a pair of adjustable clamp plates (14) releasably secured to top plate (12) by four carriage bolt assemblies (20). Top plate (12) includes a central channel (29) that allows top plate (12) to straddle tongue (32) and clamp plates (14) include step-downs (46, 48, 50), which engage the side edges of tongue (32) and thereby securely clamp top plate (12) to the tongue.
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