A little off beat is the story below perhaps, but in the 'rhythm' of things electrical and the fact that emeritus helicopter engineer Charles Kaman is quoted for the use of a clever little gizmo that we all take for granted whenever we use a strobex.
Either that or its a story that only a rock an roll guitar player could come up with?
Maybe the elctrical rotary machine could carry enough of these gizmos around to be self sustaining in current as long as heaps of vibrations were built into the invented helicopter contrivance ?
http://www.abc.net.au/catalyst/stories/3318871.htm