| 摘要 |
<p>A tiered or platform-type seating unit (10) which, when in a collapsed storage position, can be oriented in an upright position and is provided with support rollers (74) which enable it to be moved about, including permitting passage throughout doorways. When in use, the unit (10) is vertically rotated 90 degrees to position load-bearing rollers (74) thereof in engagement with a floor. The platform unit (10) includes a base platform (11) having a first raised seating tier (21) fixedly associated along one edge (12) thereof. A second tier (31) is positioned adjacent the opposite edge (13) thereof. This second tier (31) is movable from a lower position into an upper position so that this second tier (31) is at an elevation above and spaced rearwardly from the first tier (21), there being an intermediate aisle therebetween. This aisle stores therein, when the unit (10) is collapsed, a pair of removable platforms (51) which are locked between the first (21) and second (31) tiers when the second tier (31) is collapsed. These platforms (51) can also be positioned on the floor in front of the first tier (21) to define a third tier which is disposed at an elevation below the first tier (21).</p> |
