Patent ID: 9638089
Date: 2017-05-02
CPC Classifications: F01N,F16J

Claim:
1. A gasket assembly, comprising: a single metallic upper surface layer; and a single metallic lower surface layer spaced apart from the upper surface layer; and a middle layer with an upper surface in direct, facing contact with the single metallic upper surface layer and a lower surface in direct facing contact with the single metallic lower surface layer, wherein the middle layer includes an inner spacer portion surrounding a first port, an outer spacer portion at least partially surrounding the inner spacer portion, and at least one insulating portion radially separating the inner annular spacer portion from the outer annular spacer portion, said insulating portion upwardly bounded by said single metallic upper surface layer and lower bounded by said single metallic lower surface layer; further comprising extending portions radially connecting said inner spacer portion and said outer spacer portion, wherein said extending portions, said inner spacer portion, and said outer spacer portion are unitary; wherein said single metallic upper surface layer and said single metallic lower surface layer overlap both said inner spacer portion and said outer spacer portion; wherein said inner spacer portion has a planar upper surface and a planar lower surface.