Patent ID: 6836916

Claim:
A process for making a waterproof shoe, comprising: (a) preparing an upper and a waterproof lining unit, each of which opens at top and bottom ends thereof; (b) placing said lining unit within said upper, and connecting said top end of said upper to said top end of said lining unit; (c) attaching a cover member to said bottom end of said upper to close said bottom end of said upper; (d) inserting a last into said lining unit, and attaching an outsole to said bottom end of said upper; (e) removing said last from said lining unit; (f) pulling out said lining unit from said upper through said top end of said upper so that said bottom end of said lining unit moves away from said upper; (g) sewing said outsole to said bottom end of said upper by using a sewing machine, thus forming a reinforcing sewing line that interconnects said outsole and said upper, wherein a component of said sewing machine is inserted into said upper through said bottom end of said lining unit; (h) sealing said bottom end of said lining unit after step (g); and (i) re-inserting said lining unit into said upper.