Whirlwind Tool Company Principal David Butler is a retired engineer and inventor of US Patented flesh-sensing machine-tool-safety devices. Butler also holds a recently issued US Patent for 5G IoT flesh-sensing safety device that can help prevent life-altering operator injuries from dangerous table saws and other machine tools.Whirlwind Tool Company's patented "Black Box" is so-named because it can be attached to serve as a monitor the machine tool safety operations and bring the tool to a rapid stop in less than one second. The machine will not be damaged and may be restarted immediately after the operator has learned of an unsafe operation. The Black Box device may be used with many millions of existing machine tools to help prevent accidents. The Black Box device controls the electrical power supplied to the machine and can sense the operators flesh coming too close or in contact with an attached safety enclosure. Upon sensing the danger of the operator's proximity to the spinning blade, the Black Box stops the machine in a fraction of a second without any damage to the machine. The machine may then be immediately restarted by the operator after the emergency stop warning which serves as a learning aid to operators of many dangerous machine tools. This patented technology represents a modern innovation in the long stagnant woodworking and related dangerous machine tool industries. Alone, we cannot keep up with our very encouraging website feedback, nor can we completely define the market. Every week we seem to have a new application suggested to me for the black box. Aside from engineering, as an experienced woodworker Butler has had more than sixty years of woodworking machinery experience as a hobby and fortunately has never suffered a serious injury in his home workshops. He has have built well-known American period furniture reproductions. Butler's professional career was devoted primarily to computer hardware engineering and electronics and he is now retired. His company, Whirlwind Tool wishes to sell these patents and technical details to one or more companies for a return on investments and to help bring these safety products to the global marketplace which we know from our feedback is begging for this type of safety device. Included in a sale will be several hundred printed requests for products from governments, businesses, schools and individuals.Also, the buyer will be provided written instructions and training on the prototype electronics that are demonstrated on the company's website and suggest improvements for high-quantity production circuits and engineering upgrades during pre-production stages. Also included will be all of the prototype machines that are shown at www.whirlwindtool.com.