| 摘要 |
The present invention involves a four (4) wheel trolley used in a track and trolley system which allows the trolley to move smoothly along a track, bear and carrying heavy movable wall panels, and minimize the stacking depth of the movable wall panels when such panels are stored. The trolley includes trolley discs that define an outer circumferential groove. The outer circumferential grooves allow the trolley discs to maintain a lubricant reserve so that the trolley discs may move smoothly along the track. While the trolley may carry heavy loads, because of its relatively small size, the trolley minimizes the stacking depth of movab le wall panels in their storage positions. |
