Patent ID: 8302593

Claim:
A gas burner assembly for a cooking appliance including a substantially planar cooktop surface, said gas burner assembly comprising: a first burner assembly comprising a first burner body comprising a substantially flat bottom surface configured to be mounted directly on, and contact the substantially planar cooktop surface and form a substantially annulus seal therebetween, the first burner assembly being configured to provide an inner ring cooking flame, said first burner assembly comprising a central cap removably coupled to said first burner body, said first burner body and said central cap defining a burner chamber within said first burner assembly, said burner chamber being configured to receive primary-air from below the cooktop surface; a second burner assembly configured to be mounted on, and contact the substantially planar cooktop surface, and provide an outer ring cooking flame, said second burner assembly being configured to be concentric with said first burner assembly and separated from said first burner assembly by a distance at all points along said first and second burner assemblies, the second burner assembly comprising a bottom surface and a plurality of passages circumferentially defined in the bottom surface, the plurality of passages being positioned above the substantially planar cooktop surface; at least one of said first burner assembly and said second burner assembly being independently removable from the cooktop surface without using a tool, an interior of said second burner assembly being configured to receive secondary-air, the secondary-air flowing from below the outer ring cooking flame into the interior of the second burner assembly to facilitate combustion of the inner ring cooking flame; and said first burner assembly being configured to operate, independent of said second burner assembly, at or below a first level, and said first burner assembly and said second burner assembly being configured to operate simultaneously at or above the first level.