Patent ID: 9648974
Date: 2017-05-16
CPC Classifications: A21B,A47J

Claim:
1. A baking sheet formed of a metal planar plate member having a polygon shape defined by multiple sides, having a thickness and periphery, having upper and lower planar surfaces, having a side-to-side dimension that is at least an order of magnitude greater than the thickness of the metal planar plate member, a peripheral channel that extends about the periphery of the metal planar plate member, the peripheral channel being disposed closely adjacent to all sides of the metal planar plate member, wherein the metal planar plate member has four straight sided, in combination with a grate member on which the metal planar plate member is positioned in an oven, wherein the metal planar plate member is a solid structure bounded by upper and lower planar surfaces that respectively define the upper and lower planar surfaces of the metal planar plate member, wherein the upper and lower planar surfaces of the metal planar plate member are disposed in parallel with each other, wherein the upper and lower bounded planar surfaces of the metal planar plate member are of the same surface area size, wherein the lower bounded surface of the metal planar plate member is the lowermost rest surface of the metal planar plate member for positioning on the grate member, wherein the grate member is constructed and arranged to extend beyond the sides of the metal planar plate member, wherein each side of the metal planar plate member is joined at a contiguous corner, wherein the metal planar plate member is constructed of steel, wherein each side of the metal planar plate member is formed by a flat sidewall surface that extends about the entire periphery of the solid structure and that extends orthogonal to both the upper and lower bounded surfaces of the metal planar plate member, wherein the metal planar plate member has the channel on the upper planar surface thereof, wherein the channel is semi-circular in cross-section and is maintained as semi-circular extending about the entire metal planar plate member, wherein the channel includes straight respective semi-circular channel sections adjacent to the sides and extending as a semi-circular channel along the entire length of each straight section, and smaller respective semi-circular channel sections adjacent each corner and extending as a semi-circular channel about a circumference of each smaller section, wherein the semi-circular channel has only a semi-circular surface with opposed top ends of the channel terminating at the upper planar surface of the metal planar plate member and at respective inner and outer locations of the upper planar surface of the metal planar plate member, wherein both the straight and smaller semi-circular channel sections have respective semi-circular cross-section surfaces, wherein each of the smaller semi-circular cross-section surfaces are contiguous with adjacent straight semi-circular cross-section surfaces, and wherein each of the smaller semi-circular cross-section surfaces are disposed in an arc at the plate member corner in joining the adjacent straight semi-circular cross-section surfaces.