Fluid sprinkling – spraying – and diffusing – Including valve means in flow line – Reciprocating
Reexamination Certificate
2006-04-18
2006-04-18
Hwu, Davis (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including valve means in flow line
Reciprocating
C239S585300, C239S585400, C239S585500, C239S533200, C239S533110, C239S088000
Reexamination Certificate
active
07028928
ABSTRACT:
A fluid control valve assembly controls the flow of actuation fluid to and from a fuel injector. The fluid control valve assembly includes at least one solenoid actuator attached to a valve body. The solenoid actuator includes a stator and an armature comprised of a soft magnetic material. At least one of the armature and the stator include an impact surface. The impact surface is coated with a relatively hard, nonmagnetic material coating. Thus, the relatively hard, nonmagnetic material coating will protect the relatively soft, magnetic material comprising the stator and the armature, and increase the durability of the solenoid actuator and the fluid control valve assembly.
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Caterpillar Inc.
Hwu Davis
Liell & McNeil
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