Fluid sprinkling – spraying – and diffusing – Fluid pressure responsive discharge modifier* or flow... – Fuel injector or burner
Reexamination Certificate
2006-04-04
2006-04-04
Hwu, Davis (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Fluid pressure responsive discharge modifier* or flow...
Fuel injector or burner
C239S533200, C239S533120, C239S088000, C239S585100, C239S585500
Reexamination Certificate
active
07021566
ABSTRACT:
A modular fuel injector that includes a coil group subassembly and a valve group subassembly. The coil group subassembly is independently testable. The valve group subassembly is independently testable and includes a tube assembly having a longitudinal axis extending between a first tube end and a second tube end, and a seat assembly disposed in the tube assembly proximate the second tube end. The seat assembly includes a flow portion and a securement portion. The flow portion extends along the longitudinal axis between a first surface and an orifice disk retention surface at a first length. The flow portion has a seat orifice extending therethrough and an orifice disk coupled to the orifice disk retention surface so that the orifice plate is aligned in a fixed spatial orientation with respect to the flow portion. The securement portion extends along the longitudinal axis away from the orifice disk retention surface at a second length greater than the first length. A method of maintaining a fixed spatial orientation and dimensional symmetry of at least one of the seat and orifice disk in the valve subassembly is disclosed.
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PCT International Search Report filed Jun. 18, 2004 (PCT/US2004/019503) and date of mailing Oct. 10, 2004.
Barnes Fredrick L.
Dallmeyer Michael P.
Fochtman James P.
Imoehl William J.
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