WHEELCHAIR Russian patent published in 2012 - IPC A61G5/00 

FIELD: wheel vehicles with a muscular drive.

SUBSTANCE: invention can be used by invalids. The invalid carriage contains a frame 2 with a seat 12 set on two conducted self-orientating wheels 36 and two plugs 15 in which axes 16 of driving wheels 18 and rims 28 connected with rotation of driving wheels 18 are fixed. Thus the rim 28of each driving wheel 18 has the axis of rotation 26 which is above the rotation axis 16 of a driving wheel 18, and is supplied by a cogwheel 29. Thus the cogwheel 29 is attached coaxially with a rim. The block of gear wheels 19 of different diameters is coaxially attached to each driving wheel 18. Thus one of gear wheels is in gearing with a cogwheel 29 of rim 28. The axis of rotation 26 of each rim is fixed on the lever 25 which is swingingly attached to the case 22 with a horizontal axis of the hinge 23. Each case 22 is attached swingingly to a frame 2 with a vertical axis of the hinge 20. Besides the lever 25 is supplied by the probe 30 entering into gearing with one of the comb grooves 31 attached to the frame 2. The lever 25 is connected with the frame 2 with the spring 33.

EFFECT: declared invention raises convenience of switching of speeds directly for the rims 28.

3 cl, 5 dwg