Appeal No. 2002-1464
Application No. 09/213,710
We do not sustain any of the obviousness rejections on
appeal for the reasons given below.
Appellants’ independent claims 1, 15, 24, and 33 read as
follows.
1. A fuel injector assembly comprising:
an injector body defining a cylindrical bore;
a fuel injector plunger being positioned within the
cylindrical bore, said fuel injector assembly being hydraulically
actuated and reciprocated by moving said fuel injector plunger
between an open position and a closed position, said fuel
injector plunger being made from a low alloy steel substrate and
having a coating thereon;
said coating having a pre-established thickness, said pre-
established thickness being in the range of between about 0.5 and
5.0 microns and being composed of a deposited primary coating.
15. A method for increasing a boundary lubricity value at
the interface of a low alloy steel substrate reciprocatably
positioned in contacting relation to an injector body of a
hydraulically actuated fuel injector assembly comprising:
preparing a fuel plunger being made of a low alloy steel
substrate;
depositing a primary coating on said low alloy steel
substrate using a low temperature physical deposition process
said coating having a pre-established thickness, said pre-
established thickness being in the range of between about 0.5 and
5.0 microns.
24. A component of a fuel injection system comprising:
a low alloy steel substrate;
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