Flogging a dead horse much?
"In the United States, a design patent is a form of legal protection granted to the
ornamental design of a functional item."
Note: not an idea, an ornamental design. In the US, you cannot patent an idea - well, according to the US patent office, anyway. And hey, what would they know? They're only the US patent office!
This is why Aerohead continues ad infinitum to post stuff here that is wrong, misleading or confused. He never, ever takes a correction. In fact, this business about patents is a perfect example. Aerohead wrote that you can patent ideas in the US.
Simply wrong.
You'd think he agree he made a mistake, wouldn't you. But no, not a bit of it.