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    • 9. 发明授权
    • Rollable sports base
    • 可滚动的运动场
    • US06405990B2
    • 2002-06-18
    • US09813805
    • 2001-03-22
    • Mark E. DavisRonald A. WhiteCraig SaundersRene PolinKeith KristiansenMichael BalloneGary Grossman
    • Mark E. DavisRonald A. WhiteCraig SaundersRene PolinKeith KristiansenMichael BalloneGary Grossman
    • F16M1300
    • A63B71/023A63B63/083A63B2071/025
    • A rollable sports ballast base for supporting a sports apparatus support member comprising a base member having a top and bottom surface. The bottom surface contacts a support surface such as a driveway or other playing surface. There is at least one wheel assembly, retractable from a lowered position to a raised position. The wheel assembly includes a pivoting connector coupled to the base member and a wheel bracket coupled to the pivoting connector. The wheel bracket includes an axle, at least one wheel, and a handle extending outwardly from the wheel bracket. The handle is used to pivotally rotate the wheel assembly about a transverse axis. When the handle is rotated away from the base member, the wheel assembly is placed in a lowered position whereby the wheel contacts support surface thus separating the bottom surface of the base member from the support surface.
    • 一种用于支撑运动装置支撑构件的可滚动运动压载基座,包括具有顶部和底部表面的基部构件。 底表面接触诸如车道或其他游戏表面的支撑表面。 至少有一个轮组件可从降低位置缩回到升高位置。 车轮组件包括联接到基座构件的枢转连接器和联接到枢转连接器的轮架。 车轮支架包括轴,至少一个轮和从车轮支架向外延伸的把手。 手柄用于围绕横向轴线枢转地旋转车轮组件。 当手柄远离基座部件旋转时,轮子组件被放置在降低的位置,由此轮子接触支撑表面,从而使底座部件的底面与支撑面分离。