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    • 35. 发明授权
    • Caster direction-locking mechanism for mobile cart
    • 脚轮方向锁定机构
    • US4875696A
    • 1989-10-24
    • US243212
    • 1988-09-12
    • Robert J. WelchAlbert KolvitesRobert M. White
    • Robert J. WelchAlbert KolvitesRobert M. White
    • B60B33/02B62B5/04
    • B60B33/02B62B5/04
    • A caster direction-locking mechanism for a mobile cart improves agility and stability of the cart during high speed movement. This cart includes four casters supporting it for rolling movement. Each caster has a wheel rotatable about a horizontal axis and is mounted with the cart for swiveling movement about a generally vertical axis. The caster direction-locking mechanism selectably locks two adjacent casters against such swiveling movement and with the horizontal axes thereof in generally mutually parallel relation. A handle is mounted on the cart for steering it and an actuator is associated with the handle for actuating the caster direction-locking mechanism to selectably lock and unlock the two casters against swiveling movement.
    • 用于移动式推车的脚轮方向锁定机构提高了在高速移动期间推车的敏捷性和稳定性。 这款车包括四个脚轮,支持滚动运动。 每个脚轮具有可围绕水平轴线旋转的轮子,并且安装有用于围绕大致竖直轴线的旋转运动的推车。 脚轮方向锁定机构可选地将两个相邻的脚轮相对于这种旋转运动锁定,并且其水平轴线大致相互平行的关系。 手柄安装在推车上用于转向它,并且致动器与手柄相关联,用于致动脚轮方向锁定机构,以可选择地锁定和解锁两个脚轮以防止旋转运动。