| 摘要 |
<p>27 The invention relates to a rotationally molded plastic flush tray having a drain opening and a plurality of ribs or rib portions projecting upwardly from the horizontal interior portion of the tray for channeling flushing fluids to the drain opening. The ribs or rib portions include openings for permitting the plastic material to flow during molding and to provide uniform plastic thickness prior to solidification of the plastic.</p> |
