Patent ID: 6634663
Filing Date: 2003-10-21
Classification: A61G

Abstract:
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 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 defines an arc and moves between a neutral position disengaged from the handrail and a forward position engaging the handrail, a handle grip mounted to the crank web member, friction means 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 rotary forward position whereby the manual propulsion assembly can be utilized to propel the wheelchair forwardly, characterized in that the crank web member includes a rocker having a web portion in a plane parallel to the lever and, the crank web member is pivoted to the end of the lever, and a platform at a right angle to the web portion, the platform having a front wing and a rear wing wherein the rear wing extends rearwardly a greater distance from a longitudinal axis of the lever member than the forward extent of the front wing and the crank handle grip is mounted in the front wing.