Negative electrode for spark plug

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Description

FIG. 1 is a perspective view of a negative electrode according to the invention, the negative electrode is shown and attached to the base of a spark plug which is indicated by the broken lines and which forms no part of the invention;

FIG. 2 is a side elevational view of the negative electrode of FIG. 1;

FIG. 3 is a front elevation view of the negative electrode of FIG. 1;

FIG. 4 is a rear elevational view of the negative electrode of FIG. 1;

FIG. 5 is a top plan view of the negative electrode of FIG. 1; and,

FIG. 6 is a bottom plan view of the negative electrode of FIG. 1.

Referenced Cited
U.S. Patent Documents
D238678 February 1976 Hornsley
1445044 February 1923 Sharp
1666853 April 1928 Harris
2652043 September 1953 Johnson
2733370 January 1956 Szilagyi
2894162 July 1959 Ignatjev
4023058 May 10, 1977 Lara
4268774 May 19, 1981 Forkum, Jr.
4401915 August 30, 1983 Kashiwara et al.
4916354 April 10, 1990 Forkum, Jr.
5051651 September 24, 1991 Kashiwara
5090373 February 25, 1992 Kashiwara et al.
5091672 February 25, 1992 Below
5430346 July 4, 1995 Johnson
Patent History
Patent number: D427972
Type: Grant
Filed: Dec 16, 1997
Date of Patent: Jul 11, 2000
Inventor: Kevin Ray Parker (Charlotte, NC)
Primary Examiner: Joel Sincavage
Law Firm: Dougherty & Associates
Application Number: 0/81,843