Appeal No. 1999-0608 Page 3
Application No. 08/571,471
BACKGROUND
The appellant's invention relates to a rolling bearing
for supporting a shaft of a hand-piece to which a dental
rotary cutting tool is attached. It is important to appellant
that the bearing comprise a retainer which is a sintered
polyimide member formed by sintering a polyimide resin powder,
having 5-20% by volume pores, and a fluorinated oil
impregnated into the sintered member and filling the pores. A
copy of the claims on appeal is contained in the appendix to
the appellant's brief.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Dan'hata JP 02-118216 May 2, 1990
Matsumoto JP 03-272320 Dec. 4, 19912
Appellant's Admitted Prior Art on pages 2, 3 and 6 of the
specification (APA)3
References made of record by this panel of the Board are:
Manwiller 4,238,538 Dec. 9, 1980
Copies of English language translations of Dan'hata and Matsumoto,2
prepared by the Patent and Trademark Office, are appended hereto.
Appellant has not challenged the examiner's characterization of this3
subject matter as admitted prior art.
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