US Patent 7419213 Seat cover

A bordering edge of cover members and a bordering edge of cover members of a sitting portion cover of a seat cover are folded back in a longitudinal direction along raised portions of a sitting portion, creased, and attached to the rest of the members while being smoothly curved in conformance to the raised portions, thus to form a three-dimensional curved shape conforming to a top surface of the sitting portion. A bordering edge of cover members and a bordering edge of cover members of a backrest cover are folded back in a longitudinal direction along raised portions of a backrest portion, creased, and attached to the rest of the members while being smoothly curved in conformance to the raised portions, thus to form a three-dimensional curved shape conforming to a front surface of the backrest.