| 摘要 |
<p>A mobile folding choral riser includes a foldable frame (10) having means for receiving a number of removable riser steps (50,60,70) at progressively higher locations on the frame. Locking means are provided for releasably securing the steps to the framework. A guardrail (20) is provided along the back of the riser, and is pivotable to permit overlapping with the guardrails of other riser sections when a riser in forward configuration (widest step at the back) is placed adjacent a riser section in reverse configuration (narrowest step at the back). Interlocks are provided for securing adjacent riser sections together, regardless of whether individual sections are in forward or reverse configuration.</p> |
