The Whirlwind wheelchair is a wheelchair designed to be made in developing countries using local resources, in a sustainable development effort.
It was co-designed by Ralf Hotchkiss of Whirlwind Wheelchair International. Hotchkiss, a paraplegic, has traveled extensively, designing wheelchairs that could be built in developing countries.
Whirlwind Wheelchair International uses the principle of open source design, and offers construction classes and consulting services.
References
Whirlwind wheelchair Wikipedia(Text) CC BY-SA