Thank you all for your replies. It looks like a stalk switch is the whole arm rather than just the ring, and unless I'm reading it wrong, the patent looks like it is for a specific application rather than the device itself.
I may have to make my own because as AlephZero says, I am really only...
I'm working on a prototype device, and I'm currently figuring out the form factor. On the turn indicator of my car, there is a ring with several positions that will control the lights. I'm thinking that something similar would work well on the handle of my device, and I'm looking to purchase...