Assume a patent is awarded with apparatus and method claims applying to some device with an intended process. For example, consider a potato peeler intended to be swiped across potatoes, in which both the peeler and process of swiping the peeler are patented. If someone wanted to then open a potato-peeling shop, and they bought the device from a patent owner or licensee, would they owe royalties on the revenue generated by peeling potatoes?
In my case, I am working out a license agreement with such a patent owner in order to manufacture and sell it. I am wondering if I can somehow buy the device from myself or sell the device to a family member (i.e. not at arm's length) at 'market price', and then open a shop providing royalty-free services using the device. Would exhaustion apply in this case? What if I instead sold the device to someone who was at arm's length?