Patent ID: 8317112
Filing Date: 2012-11-27
Classification: F02M,Y10T

Abstract:
1. A valve seat for a fuel injector comprising: a main body having a proximal and a distal end, at least one orifice extending through the main body, a seating surface on the main body constructed and arranged to receive a closure member of a fuel injector such that when the closure member engages the seating surface, the at least one orifice is closed, a guide surface on the main body constructed and arranged to guide movement of the closure member, and a first annular wall extending in a cantilever manner from the main body at the distal end thereof and defining an outer peripheral portion of the valve seat, the first annular wall being constructed and arranged to deform during welding at the wall so as to isolate effects of the welding from the seating surface and the guide surface, wherein the first annular wall includes an annular groove in the distal end of the main body, the groove being open at the distal end of the main body and defining a secondary annular wall spaced from the first annular wall with the groove there-between.