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Upper Darby High School
Drexel Hill, Penn.
Omni-Directional Wheelchair


  • A total of 72 dual-layer polyurethane rollers – set on fins at 45-degree angles – circumscribe each stainless-steel hub that comprises the omni-directional wheelchair.

  • A three-access joint stick coupled with encoders mounted on each drive shaft allow infinite direction, while ensuring precise control of speed and direction of each wheel.

  • The powered chair also has the ability to raise and lower its height, tilt the seat, and raise and lower the footrest.

  • Demonstrated at the Odyssey, the InvenTeam’s omni-directional wheelchair illustrated full maneuverability through translational, lateral and rotational movements including moving in diagonals at any angle and tracing an arch.

  • There is potential to further develop the prototype in collaboration with the company Airtrax, which provided additional support for the InvenTeam.