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。

公开(公告)号：US4674584A

公开(公告)日：1987-06-23

申请号：US782741

申请日：1985-10-01

申请人： Baxter R. Watkins

发明人： Baxter R. Watkins

IPC分类号： B62D55/075 ,  A61G5/06 ,  B62B5/02 ,  B62B9/02

CPC分类号： A61G5/061 ,  A61G5/066 ,  A61G5/042 ,  A61G5/1075 ,  Y10S180/907 ,  Y10S280/10

摘要： A stair-climbing wheelchair having a sensor at the front end thereof for sensing the presence of a stair step or an inclined ramp. The sensor emits signals which reflect from a surface and to a receptor in the sensor, the receptor being coupled to a microprocessor which determines not only the linear distance traveled by the wheelchair in a forward direction, but also the height of a stair step. Thus, when the tracks are down, a microprocessor associated with the sensor will shut off the drive motors to the tracks if the slope of the stairway is too great when the tracks are down. In such a case, the wheelchair backs away from the stairway and does not go down it. If the slope is less than a predetermined value, such as 30.degree.-35.degree., the wheelchair can move down the stairway in the normal fashion.

摘要翻译： 在其前端具有传感器的楼梯轮椅，用于感测台阶或斜坡的存在。 传感器发射从传感器的表面和接收器反射的信号，该接收器耦合到微处理器，其不仅确定了轮椅在向前方向上行进的线性距离，而且确定了阶梯台阶的高度。 因此，当轨道下降时，如果轨道下降时楼梯的斜率太大，则与传感器相关联的微处理器将关闭驱动马达到轨道。 在这种情况下，轮椅离开楼梯，不会掉下来。 如果坡度小于30°-35°的预定值，则轮椅可以以正常方式沿着楼梯向下移动。

公开(公告)号：US4667136A

公开(公告)日：1987-05-19

申请号：US848593

申请日：1986-04-04

申请人： John Bell

发明人： John Bell

IPC分类号： B60L15/20 ,  H02P5/68 ,  H02P7/68

CPC分类号： B60L15/2036 ,  H02P5/68 ,  Y02T10/645 ,  Y02T10/646 ,  Y02T10/648 ,  Y02T10/7275 ,  Y10S180/907

摘要： An improved drive circuit for steering a motorized wheelchair. A control mechanism produces right and left drive signals to respective right and left wheel drive motors. These right and left drive signals are amplified by right and left amplifiers to provide the necessary magnitude power signal to the motors. The input to the amplifiers are cross-coupled so that each amplifier will amplify its own input signal plus a portion of the cross-coupled input signal.

摘要翻译： 用于转向电动轮椅的改进的驱动电路。 控制机构产生左右驱动电机的左右驱动信号。 这些右和左驱动信号由左和右放大器放大，以向电动机提供必要的幅度功率信号。 放大器的输入交叉耦合，使得每个放大器将放大其自身的输入信号加上交叉耦合输入信号的一部分。