Injector seat that includes a coined seal band with radius

Details Injector seat that includes a coined seal band with radius Injector seat that includes a coined seal band with radius

2008-07-30

2010-11-16

Tran, Len (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S533120, C239S533130, C239S533140, C239S585500

Reexamination Certificate

active

07832661

ABSTRACT:
A fuel injector apparatus and method is provided for use in a fuel injection system of an internal combustion engine that includes a body, a valve seat, closure member, and an orifice plate. The valve seat comprises the intersection of two angled surfaces with a radius before assembly of the fuel injector. During assembly of the fuel injector, a member presses against the radius edge of the sealing surface of the valve seat to create an oblique third sealing surface or sealing band that is coined into the valve seat. The sealing band provides an improved seal between the valve closure member and the valve seat which operates to prevent leakages of fuel in the fuel injector.

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Office Action and Translation in corresponding Japanese Patent Application No. 2006-528314 issued on Sep. 30, 2009 (dispatched on Oct. 6, 2009).

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