Appeal No. 1997-3157
Application No. 08/286,224
head arm to the center of a head slider, and that a radial
width W of the recording area of the magnetic disc must
satisfy a mathematical relationship in a claimed equation in
order to maintain the core piece of the head at a constant
floating height over the rotating disc. With respect to the
teachings of Sakai and Asano, the examiner is of the opinion
(answer, pages 4 and 5) that Sakai discloses the “lower limit”
of the claimed equation, and that Asano discloses the “upper
limit” of the claimed equation. The examiner is of the
opinion (answer, page 5) that it would have been obvious to
one of ordinary skill in the art to apply the “upper limit”
teachings of Asano to the teachings of Sakai to “provide a
higher density recording disk drive.” The examiner
acknowledges (answer, pages 7 and 8) that Hatch and Sugahara
do not disclose the claimed equation. According to the
examiner (answer, pages 7 through 10), Hatch and Sugahara
“could” or “would” satisfy the claimed equation “depending on
the values of ‘D’, ‘L’ and ‘W’” in order to “provide a higher
density recording disk drive.”
Appellants argue (brief, paper number 22, pages 11 and
12) that:
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