Patent ID: 8316785

Claim:
A flat seam construction formed on overlapping portions of stitchable automotive upholstery materials each comprising a first soft relatively thin material and a second substrate material that is less flexible than the first relatively thin material, said seam construction having a number of sequentially formed stitches, each stitch comprising: i. two outer threads, formed into first and second outer thread loops, and two inner threads, formed into first and second inner thread loops; ii. said first and second outer thread loops spaced across a width of said seam construction, and said first and second inner thread loops positioned between said first and second outer thread loops; iii. each of said inner and outer thread loops transversely penetrating said one or more stitchable materials; each of said inner and outer thread loops having a bight portion engaging a bottom surface of said one or more stitchable materials; iv. at least one looper thread formed on, and coplanar with said bottom surface, and arranged such that, said at least one looper thread passes between said bottom surface and at least one of said bight portions; v. at least one decorative thread visible on a top surface of said portion of one or more stitchable materials and extends across said width; wherein said at least one decorative thread loops around at least said first outer thread loop at a penetration point thereof.