| 摘要 |
A manual propulsion kit for a wheelchair when the wheelchair includes a frame with two large wheels on either side of the frame journaled to axles on the frame, each of the large wheels mounting a circular handrail. The kit including a pair of manual propulsion assemblies wherein each assembly includes a lever adapted to be journaled to one of the axles for rotational movement within a predetermined angular sector determined by a substantially vertical neutral position and a position forward of the frame. A crank handle having a crank web member is pivoted for rotation, at the end of the lever arm adjacent the handrail when the lever arm is mounted to the axle, such that the crank web member moves between a neutral position disengaged from the handrail and a forward position engaged with the handrail. A crank handle grip is mounted to the crank web member. Friction pads are associated with the crank web member adapted to engage the handrail when pressure is applied to the crank handle to move the web member to a forward position whereby the manual propulsion assembly can be utilized to propel the wheelchair forwardly or rearwardly. |
