A conductor assembly of the type which, when conducting current, generates a magnetic field or in which, in the presence of a changing magnetic field, a voltage is induced. According to an exemplary embodiment a conductor is positioned along a path of variable direction relative to a reference axis....http://www.google.ca/patents/US7889042?utm_source=gb-gplus-sharePatent US7889042 - Helical coil design and process for direct fabrication from a conductive layer
