A power burner system for use with a heating appliance includes a burner tube, a gas valve for providing gas to the burner tube, and a variable speed combustion air blower for mixing air with the gas provided to the burner tube. The burner system further includes a control in communication with the gas...http://www.google.co.uk/patents/US20080092754?utm_source=gb-gplus-sharePatent US20080092754 - CONVEYOR OVEN
