Appeal No. 1997-0144
Application No. 08/424,223
rejected under 35 U.S.C. § 103 as being unpatentable over
Bettcher in view of the admittedly known normal strength fiber or
yarn VECTRAN M described in appellant's specification at pages 2-
4. Bettcher discloses a cut-resistant yarn (Fig. 1) having the
construction broadly set forth in claim 1 on appeal, with the
exception that this patent does not disclose or teach that "at
least one of" the core, first wrapping and second wrapping of the
composite yarn therein be comprised of a liquid crystal polymer
fiber having a tenacity of no more than 10 grams per denier.
However, Bettcher does teach that the yarn therein has a second
wrapping or winding (14) which is preferably one having low
friction, light weight, a silk-like hand, that is fast drying,
resistant to light and low in cost, preferably, for example,
nylon or a polyester (e.g., Dacron), both of which are recognized
as normal strength fibers. Similarly, appellant's specification
(pages 2-4) and brief (pages 13-14)1 indicate that VECTRAN M sold
by Hoechst Celanese Corp. is a normal strength fiber having good
abrasion resistance, high impermeability, excellent property
retention over a broad temperature range, low moisture
1 While appellant indicates on page 13 of the brief that a
brochure on VECTRAN liquid crystal polymer fibers was submitted
to the examiner, we find no such brochure of record in the
application file.
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