What prompted me to invest in Shumate was the Hemiwedge valve. At that time (2006) it was still going through testing and final development, closing in on product launch. The technology looked superior to what was/is available, and they owned the patents to it.
I've always followed the investing philosophy that the folks who made the most money during the Gold Rush were the merchants selling picks and shovels to the prospectors. So it is with Hemiwedge, a superior technology in a ubiquitous field (valves), which all of the big boys in the oil, gas, chemical, and energy markets require in order to run their operations.
Essentially, I'm betting that the Hemiwedge technology will outperform and prove to be far more economical than their traditional valve rivals. Such advantages make for easy choices for those for whom valves are the nuts and bolts of their business.