Appeal No. 96-0632
Application 08/131,376
the comments made by the appellants; we add the following
discussion for emphasis.
The references applied against the claims include no
discussion indicating that any of them recognized the problem
addressed by the appellants, the problem being the formation of a
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gap between upper and lower shells of a cartridge . Nor is there
any teaching in the references of the solution taught by
appellants. That solution is the providing of ribs which
introduce distortion stresses into rear edge portions of the upper
and lower shells of a cartridge which tend to cause them to bow in
the direction of the opposing shell.
Although the prior art need not be modified for reasons
taught by an applicant, no satisfactory motivation has been given
for making certain of the ribs of Iwamoto relatively thick with
respect to rear edge portions of the shells 2 and 3. As to claims
1, 5 and 7, the examiner merely assumes that one of ordinary skill
in the art would have sought to make certain ribs of Iwamoto
thicker than the rear edge portions of the two shells, and argues
that one would have sought an optimized thickness for the ribs.
2 At page 3, lines 11-20, appellants acknowledge that the gap problem is disclosed in
Japanese Utility Model Publications Nos. 60-180377 and 62-42172.
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