Same Dean Kamen that invented the Segway, I assume. He also invented a wheelchair that literally climbs stairs, only problem is it’s so expensive not many people can afford it.
He also invented the internal insulin pump, a portable dialysis machine, and dozens of others items used daily.
He is an inventor in the style of Edison, and will likely succeed where others have failed if his patents can be believed. A truly workable Stirling engine would revolutionize the world. (That word gets used way too often, but it’s true in this case)
One and the same....
Kaman also has some systems that can produce clean water from mud or polluted water.