| 摘要 |
<p>A stage (20) or other structure having support legs (26) includes rollers (40) which are mounted so as to be supporting the stage in a first position and having the stage legs support the stage in a second position. A lift mechanism (50) includes actuating pedals (80) near the ground for raising and lowering the assembly. A linkage pivots the roller mounting member between a raised and lowered position relative to a cross member on the frame. A second pedal (60) is selectively engageable by a single foot for retaining the roller assembly in either the raised or lowered positions.</p> |
