Fluid sprinkling – spraying – and diffusing – Rigid fluid confining distributor – Orifice in separable disc or plate
Reexamination Certificate
2006-01-31
2006-01-31
Ganey, Steven J. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Rigid fluid confining distributor
Orifice in separable disc or plate
C239S494000, C239S497000, C239S552000, C239S584000, C239S585100, C239S601000, C239S900000, C239S533120
Reexamination Certificate
active
06991188
ABSTRACT:
In a fuel injection valve, a substantially arc-shaped chamfered portion in a substantially arc shape of cross section is formed on an edge of an inner wall portion of each opening end of a corresponding nozzle hole of a nozzle plate to further expand a whole diameter of an injection stream of fuel passed through a plurality of obliquely penetrated nozzle holes. In a manufacturing method for the nozzle plate, circulating a fluid mixed with an abrasive through each nozzle hole is carried out to polish opening ends of the respective nozzle holes which are faced against the external of the fuel injection valve in a form of substantially arc shape of cross section with the abrasive. Furthermore, grinding the respective major surfaces of a punched plate material which becomes the nozzle plate together with vicinities to the respective opening ends of the nozzle holes is carried out.
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patent: 6131827 (2000-10-01), Kurita et al.
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patent: 3-194163 (1991-08-01), None
Hirata Hiroaki
Kobayashi Takayuki
Nakagane Hiroki
Yanase Masatoshi
Foley & Lardner LLP
Ganey Steven J.
Hitachi , Ltd.
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