Patent ID: 6346688
Filing Date: 2002-02-12
Classification: F23Q,Y10T

Abstract:
A glow plug construction for use in an internal combustion engine, said glow plug construction comprising:a first electrode being an outer shell having an open upper end leading into a central bore, and a crimp portion extending to an upper rim terminus at said open upper end; a second electrode being a rod-like core extending through said open upper end into said central bore of said outer shell, said rod-like core spaced from and supported against said outer shell by insulating support means having an upper support portion adjacent said open upper end of said outer shell; heater means electrically connected to said first and second electrodes whereby heat is generated upon electricity passing therethrough; and an annular washer having opposing upper and lower washer surfaces surrounding a central aperture, said upper washer surface having a perimetric ridge portion with a convex radial cross-section, said annular washer positioned in said central bore at said open upper end of said outer shell such that said lower washer surface abuts against said upper support portion of said insulating support means and said rod-like core non-tactually extends through said central aperture of said annular washer, wherein said crimp portion of said outer shell is crimped radially inward to abut against said perimetric ridge portion of said annular washer, and said upper rim terminus is extended past and below an apex of said perimetric ridge portion.