patents are costly and take a lot of time
i have an idea and have constructed a device for people that have injured hands or cannot hold a shaft properly. one of my buddys saw it, showed it to a few of his buddies and they thought it would be accepted.
i gave him half the rights, he was to patent and sell them, i was to design and manufactor them.
after about the 4 or 5 time talking with at patent attorney, he said the patent cost and time involved far out weighted what we would benifit in the end.