| 摘要 |
A walker has a frame with laterally spaced front vertical post members and laterally spaced rear vertical post members, with handle members extending between them. Wheels are mounted on the front vertical post members and gear motors, supported by the front vertical post members are connected to drive the wheels. At least one control mounted on or adjacent the handle members within reach of a person grasping the handles is connected to energize the motors when the control is actuated by the person. A motor-actuated tray assembly is mounted between the front vertical post members for pivotal movement between an orientation substantially vertical and an orientation substantially parallel to the surface on which the walker is resting. A lead screw assembly with a motor in at least one of the vertical post members is adapted to raise and lower the height of the handle members.
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