公开(公告)号：US4671369A

公开(公告)日：1987-06-09

申请号：US782678

申请日：1985-10-01

申请人： Patrick J. Tiffin ,  Baxter R. Watkins

发明人： Patrick J. Tiffin ,  Baxter R. Watkins

IPC分类号： A61G5/06 ,  B62D55/075 ,  B62D55/04

CPC分类号： A61G5/061 ,  A61G5/066 ,  B62D55/075 ,  A61G5/042 ,  A61G5/1075 ,  Y10S180/907

摘要： A stair-climbing wheelchair having wheels defining a first wheel base and a pair of endless, flexible tracks providing a second wheel base, there being a motor-driven structure for moving the tracks into and out of ground-engaging positions. A first pivotal arm is pivotally mounted on the wheelchair near the front end thereof. The first arm is coupled to a fluid piston and cylinder assembly which actuates and cushions the pivotal movement of the arm as the wheelchair moves from a horizontal position to an inclined position, such as moving from the top of a stairway to the slope of the stairway as the wheelchair moves down the stairway. Similarly, a second arm coupled with a fluid piston and cylinder assembly is coupled to the wheelchair to cushion the movement of the wheelchair and its occupant as they move from an inclined position to a generally horizontal position, such as at the top of a stairway.

摘要翻译： 具有限定第一轮底座的轮子和提供第二轮底座的一对环形柔性轨道的楼梯轮椅，具有用于将轨道移入和离开地面接合位置的马达驱动结构。 第一枢转臂在其前端附近枢转地安装在轮椅上。 第一臂联接到流体活塞和气缸组件，当轮椅从水平位置移动到倾斜位置时，例如从楼梯的顶部移动到楼梯的斜坡，致动和缓冲臂的枢转运动 当轮椅在楼梯上移动时。 类似地，与流体活塞和气缸组件联接的第二臂联接到轮椅以缓冲轮椅及其乘客在从倾斜位置移动到大致水平位置（例如在楼梯顶部）时的运动。