I'd *guess* all you'd have to do is sell the pattern the way you mentioned. You know that there would be dirtballs who would rip it off, but you could at least ask that they credit your name for the pattern.
The only thing is, there isn't anything to prevent someone ELSE from patenting it if you don't, so sadly, you might end up having to pay someone ELSE rights and usage to sell your own pattern if they decide to patent your idea.
Sadly, as soon as your unpatented idea is out in public, it's up for grabs and ANYONE can change the name and patent the idea as their own.
The only thing is, there isn't anything to prevent someone ELSE from patenting it if you don't, so sadly, you might end up having to pay someone ELSE rights and usage to sell your own pattern if they decide to patent your idea.
Sadly, as soon as your unpatented idea is out in public, it's up for grabs and ANYONE can change the name and patent the idea as their own.
