Wheelchair i.e. electric wheelchair, for use by e.g. handicapped person, has main and front wheels movable between rest position and retracted position in which main wheel is retracted to permit user of wheelchair to cross obstacle

摘要

The wheelchair (1) has an obstacle crossing system (6) comprising main and front wheels which are movable with respect to each other between a rest position and a retracted position. The rest position corresponds to a position of the system during displacement of the wheelchair on a plane surface (30). The main wheel is in contact with the ground, and the front wheel is raised with respect to the ground, when the wheels are in the rest position. The main wheel is retracted, when the wheels are in the retracted position, so as to permit a user of the wheelchair to cross an obstacle i.e. step.