Scalevo

Scalevo is an electric stair-climbing wheelchair designed for individuals who use wheelchairs. It moves across flat ground by balancing on its two rear wheels. When the user approaches a set of stairs, two rubber tracks mounted on the bottom of the chair extend down, the chair leans back to keep the user level, and then Scalevo traverses the stairs one step at a time using its retractable rubber tracks. Scalevo has no front wheels, making it a two-wheeler platform. It can also ascend and descend staircases - even spiral staircases.