Appeal No. 2002-2039 Page 5
Application No. 09/258,712
an upper tip component in contact with said lower tip component and
having a solitary annular locating surface that is a second locating surface, and
defining an upper guide bore with a second centerline;
said second locating surface being included on a second line rotated
about said second centerline;
a needle valve member having an upper guide portion positioned in said
upper guide bore, and having a lower guide portion positioned in said lower
guide bore, and being movable between an open position in which said nozzle
outlet is open, and a closed position in which said nozzle outlet is [b]locked; and
said first centerline being concentrically coupled to said second centerline via an
interaction of said first locating surface with said second locating surface.
9. The fuel injector nozzle assembly of claim 1 wherein said upper tip
component, said lower tip component and said needle valve member define a
nozzle chamber; and
said needle valve member includes an opening hydraulic surface exposed
to fluid pressure in said nozzle chamber.
21. A fuel injector nozzle assembly comprising:
a lower tip component having a solitary annular locating surface that is a
first locating surface and defining a lower guide bore with a first centerline and a
nozzle outlet, and said first locating surface being included on a first line rotated
about said first centerline;
an upper tip component in contact with said lower tip component and
having a solitary annular locating surface that is a second locating surface, and
defining an upper guide bore with a second centerline, and said second locating
surface being included on a second line rotated about said second centerline;
a needle valve member having an upper guide portion positioned in said
upper guide bore, and having a lower guide portion positioned in said upper
guide bore, and being moveable between an open position in which said nozzle
outlet is open, and a closed position in which said nozzle outlet is blocked;
said needle valve member including an opening hydraulic surface
exposed to fluid pressure in a nozzle chamber, said nozzle chamber defined by
said upper tip component, said lower tip component and said needle valve
member; and
said first centerline being concentrically coupled to second centerline via
an interaction of said first locating surface with said second locating surface.
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