Appeal No. 1997-0144 Application No. 08/424,223 stainless steel or a high strength multifilament yarn (col. 3, lines 23-27). The composite yarn may comprise a high strength synthetic yarn as the core yarn overlaid with knitted stainless steel, a core yarn of nylon overlaid with knitted stainless steel, or may comprise a core of stainless steel filament overlaid with a knitted high strength synthetic multi-filament yarn (col. 2, lines 12-19). At column 3, lines 27-34, Robins notes that [t]he preferable embodiment thus far developed uses a non-metallic yarn as the core yarn 11, for example, an 840 denier nylon multifilament yarn, with a .0045 inch stainless steel strand as the knitted cover yarn 12 which is applied over the core yarn 11. However, other embodiments of core yarn 11 could comprise any type of high strength synthetic fiber material. In describing the embodiment seen in Figure 4, Robins again emphasizes (col. 3, lines 35-46) that the composite yarn utilizes a single multifilament core yarn (21), preferably a high strength multifilament, onto which is knitted a stainless steel covering yarn (22). Over the knitted covering yarn (22) is wrapped, by a conventional spiral wrapping process, a pair of yarns (23) and (24) which may comprise a multifilament yarn having good flexibility and knitting characteristics, such as nylon or polyester. In claim 1 of the Robins patent, the invention is 6Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007