Sealing member for spark plug

Details Sealing member for spark plug Sealing member for spark plug

2008-10-06

2011-11-29

Walford, Natalie (Department: 2879)

Electric lamp and discharge devices

Spark plugs

With particular connector structure

C313S118000, C313S137000, C313S141000

Reexamination Certificate

active

08067882

ABSTRACT:
A sealing member for a cylindrical spark plug having a metal shell with threaded ridges thereon to be screwed into a mounting hole of a combustion engine, the sealing member comprised of a piece of annular sheet material made of austenitic stainless steel or ferritic stainless steel that is folded back in a radial direction so as to form a region where at least two or more layers of the sheet material are overlapped in an axial direction.

REFERENCES:
patent: 2941105 (1952-08-01), Rickenbach
patent: 6489709 (2002-12-01), Teramura et al.
patent: 7977856 (2011-07-01), Hartmann et al.
patent: 2004/0066124 (2004-04-01), Kanao et al.
patent: 2001187966 (2001-07-01), None
patent: 2004134120 (2004-04-01), None
Notice of Allowanceissued in the corresponding Japanese Patent Application No. 2007-263820; dated Dec. 1, 2009, 4 pages.

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