A solid compressible foam body is enclosed within a cover of flexible material. A plurality of recessed areas are formed along the surface of the cushion by compressing the foam body in each area and applying closed stitch patterns defining a circular section. The stitches in each pattern pass through...http://www.google.sh/patents/US4563785?utm_source=gb-gplus-sharePatent US4563785 - Cushion with simulated button tuft and method for manufacturing same
