Appeal No. 96-2535
Application 08/028,473
layer having reduced wear resistance characteristics. The
independent claims on appeal, claim 1 and 14, are reproduced
below to further illustrate the claimed subject matter.
1. A mechanical member adapted to have at least a
portion of its surface slidingly engaged as a wear surface by
a mating surface, said member comprising:
a body having a wear surface, and
a coating of polycrystalline diamond film on the wear
surface, the coating having a first, outer thickness region of
a first material remote from the underlying body and a second,
inner thickness region of a second material under the first
thickness region, the second material having a morphology
different from that of the first material.
14. A seal assembly for a rotating shaft, comprising:
first and second seal members having mating surfaces for
mutually sliding engagement;
at least the first member mating surface having a
polycrystalline diamond film coating, the coating having a
surface with a reduced wear resistance.
The references of record relied upon by the examiner as
evidence of anticipation and obviousness are:
Linda Plano, Ian Hayward and John Wegand, “CVD Diamond Films
For Tribological Applications”, Crystalline Final Report
Contract No.
N00014-89-C-0151 (March 30, 1990).
2
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