Spin is a conceptual product taken from my dissertation about "Clean Energy and Its Influence on Design Development" (1998). It is a foldable transportable outdoor wind generator, made for campers and explorers. Some early ideas are shown on at the far bottom, such as the revolving wind towers, a portable wind generator within a bag and a yellow dynamo case for kites with mounted propeller as a power generator.  A possible operational situation is shown above. Some scribbles and CAD constructions show technical details (at the bottom).