| 摘要 |
A floor assembly, such as a bowling floor, is supported above a sub-floor by telescoping pedestal supports that are vertically extendable and vertically retractable. Upper and lower ends of the pedestal supports are fixed to the floor assembly and the sub-floor, respectively, so that when a pedestal support is vertically retracted, a downward force will be applied to the floor assembly, for removing bulges in the floor assembly for example. |
