I ran across this patent:
http://www.google.com/patents?id=ESUGAAAAEBAJ
Vibration generating mechanism using repulsive forces of permanent magnets
What is interesting is the inclusion of experimental data, especially figures 11 and 12, showing a small input energy resulting in a large output energy.
G;day Ken,
Thanks for bringing this one to our attention.This is a very similar idea to Steve Kundel's device except where Steve Kundel achieves rotation these guys are interested in vibration.
I have downloaded the patent and I am attaching it here.
Hans von Lieven
Figures 11 and 12 in the patent show experimental data of 1 Joule in, 4 Joules out.
There must be some way to use this?