I made a mistake. The inventor did not name it a chain gun or anything else.
http://www.google.com/patents?id=qUU...page&q&f=false
My sincere apoligies. It is rather a common name given to this very specific handgun.
Having said so, in my opininon it is hard to define this handgun as a revolver as it lacks a cylinder.
Please forgive my interruption.