Patent ID: 8759727

Claim:
An oven for roasting coffee, the oven comprising: an oven cavity having a microwave RF generator generating microwave energy into said oven cavity, said oven cavity formed by a bottom surface, a top surface, a left side wall, a right side wall, a back wall, and enclosed by a front hinged door opposite said back wall, said front hinged door with a viewing port having a plurality of apertures sufficient to enclose said microwave energy, said oven cavity enclosing a volume when said hinged door is closed; a rotating support supported by a drive mechanism attached to an inner region of said back wall, said rotating support having attachment points for a food cartridge, said rotating support having an axis of rotation perpendicular to said viewing port; said food cartridge having an observation window facing said viewing port, said food cartridge supported by said attachment points; whereby said food cartridge contains a food item, said microwave energy roasts the contents of said food cartridge, and said viewing port provides an indication of the level of roasting of said food item, said food cartridge thereby rotating substantially in the center of said enclosed volume without contact to said bottom surface, said top surface, said left side wall, or said right side wall.