Wheelchair

Details Wheelchair Wheelchair

A - Human Necessities

61

G

A61G 5/02 (2006.01) B62B 5/04 (2006.01) A61G 5/10 (2006.01)

Patent

CA 2371409

A manually-propelled wheelchair having a frame having a forward-facing seat, two independently castered front wheels mounted to the frame, a rear axle suspended beneath the frame, and two rear driving wheels, each rotatably mounted upon an opposite end of the axle. Rotatably mounted upon an opposite ends of the axle are two lever arm assemblies, each comprised of a discrete lever arm ending in a handle and extending far enough from the axle to allow an occupant of the seat to grip the handle and a discrete one-way clutch connecting the lever arm to the wheel mounted upon the same end of the axle. When the occupant pushes the handles in a forward direction, the one-way clutches are engaged so that torque is applied to turn the wheels so as to propel the wheelchair in the forward direction, but when the occupant ceases to push the handles or pulls the handles rearward, the one-way clutches are disengaged, allowing the handles to be pulled freely rearward, and allowing the wheels to rotate forward freely. The one-way clutches May be disconnected by the occupant by operating twist grip handles mounted upon the lever arms. Occupant- operable disk brakes are provided for each driving wheel, the rotor of each disk brake connected to a driving wheel so as to rotate with the driving wheel and the caliper of the disk brake mounted upon corresponding lever arm.

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