Patent ID: 6886479

Claim:
A sewing method to form a trim cover assembly for automotive seat, comprising the steps of: providing a first cover material having an outer side, a reverse side; and an end; providing a second cover material having an outer side, a reverse side, and an end; providing a reinforcing material having one end; placing said second cover material on said reinforcing material, such that the reverse side of the second cover material is contacted with the reinforcing material, while said end of the second cover material is aligned with said end of the reinforcing material; then, placing said first cover material on said second cover material such that the outer side of the first cover material is contacted with the outer side of the second cover material, while said end of the first cover material is aligned with the thus-aligned two ends of the second cover material and reinforcing material; sewing together the thus-juxtaposed first and second cover materials and reinforcing material along a given first sewing line, so that a sewn connection portion is defined therein, with a first seam and a margin to the first seam being created in the sewn connection portion; cutting off said sewn connection portion into a shortened sewn connection portion, thus transforming said margin into a reduced margin; thereafter, turning over said reinforcing material relative to said first seam in a direction to said reduced margin; also turning over said first cover material relative to said first seam in a direction to said reduced margin, so that the reverse side of the first cover material is placed on said reinforcing material and that the shortened connection portion is disposed inwardly of and between the thus-turned-over first cover material and reinforcing material; and then, sewing together both said first cover material and said reinforcing material along a given second sewing line, whereupon there are defined one sewn unit of the first cover material and the reinforcing material and a remaining portion of said second cover material in relation to said shortened sewn connection portion, with a second seam being created on the outer side of the first cover material.