Yeah, and the portable dialysis machine he invented wasn't fundimental science either. Kamen is an inventor, not a scientist, he doesn't have a degree (well, several honorary doctorates).
Inventors are the guys who find the application for the theoretical. They make things happen, find the breakthrough, make their own way when everyone is telling them it isn't possible. Kamen now has such and awesome crew at Deka, his research company, that I'm not too sure they couldn't do just about anything. They are very close to finally producing a Sterling engine, something that was thought of in 1816 and would be very efficient, but no one's been able to do until now.
If you saw iBot, his breakthrough wheelchair about 2 years ago (Johnson and Johnson bought it)then Ginger would be no surprise. iBot can climb stairs, walk on two wheels too, and run even on a sandy beach.