TRICYCLE WHEELCHAIR Russian patent published in 2021 - IPC A61G5/00 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to mechanical engineering, in particular to tricycle wheelchairs. The wheelchair comprises front driving wheels with an independent drive for each driving wheel and a rear wheel on a rotating frame, a chair and footrests. Each of the driving wheels represents of a unit of three wheels on the ends of radial brackets rotating on a uniting axis with pneumatic diagonal high-profile tyres. The peripheral part of the tyres is of a toothed gear type, the height of which being greater or equal to the width thereof, as shown in the drawing. The actuating mechanism of the drive is in designed the form of a gear, a toothed wheel with teeth sizes shrinking from the periphery to the axis of rotation, as shown in the drawing.

EFFECT: achieved is possibility of overcoming obstacles, such as curbs and stairs.

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