-
公开(公告)号:US06843349B2
公开(公告)日:2005-01-18
申请号:US10440164
申请日:2003-05-19
CPC分类号: B60B33/021 , B60B33/0018 , B60B33/0042 , B60B33/0049 , B60B33/0057 , B60B33/0068 , B60B33/0073 , B60B33/0081 , B60B33/025 , Y10T16/195
摘要: A trolley wheel mechanism has two caster wheel assemblies each having a pair of wheels mounted on a rotatable housing. In a free mode the wheels are free to both rotate and to swivel. This is caused by the user pressing a release pedal. In a unidirectional mode a retainer lock engages a brake disc to prevent swivelling of the housing. This is caused by the user pressing both pedals simultaneously. A brake mode is caused by the user pressing the apply pedal.
摘要翻译: 推车轮机构具有两个脚轮组件,每个脚轮组件具有安装在可旋转壳体上的一对轮。 在自由模式下,轮子可自由旋转和旋转。 这是由用户按下释放踏板引起的。 在单向模式下,保持器锁定制动盘以防止壳体旋转。 这是由用户同时按下两个踏板引起的。 制动模式是由用户按下应用踏板引起的。