US Patent 9630767 Temperature indicating foam gun nozzles and hoses

The invention described herein generally pertains to in-situ applications of liquid chemicals mixed and dispensed as a spray or a foam and more specifically, to in-situ application of polyurethane foam or froth and the measurement of the temperature of the chemicals used therewith employing temperature-indicating one-component or two-component foam gun nozzles and/or at least one temperature-indicating hose which employs at least one thermochromic material disposed within the foam gun nozzle and/or hoses.