Patent ID: 6939126

Claim:
A gas burner including: an internal cavity for receiving a gas and air mixture; and an external substantially cylindrical wall surrounding the cavity, the wall being provided with through hales for allowing gases to pass from the cavity to an exterior of the burner for combustion; wherein the wall is made of one or more wall elements in the form of sheets of material shaped so that together the sheets of material form a substantially cylindrical shape, the wall including at least one join between adjacent edge portions of the wall element or wall elements, the join being non-welded, and wherein both of the adjacent edge portions include a plurality of tabs extending generally in the tangential direction of the substantially cylindrical wall, the tabs are spaced apart in the axial direction of the wall elements to define gaps between the tabs, the tabs of one edge portion being axially aligned with gaps defined between the tabs of the other edge portion and the tabs of edge portion overlying at least a part of the other edge portion in the region of the join.