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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6064144 B1

PDFFull Text
Date of Patent:
May. 16, 2000

Filed:

Feb. 12, 1998

Spark plug for an internal combustion engine and process for its

Applicant:
Inventors:

Harald Knoll, Oberstenfeld, DE;

Erwin Schneck, Bretzfeld-Rappach, DE;

Werner Niessner, Steinheim, DE;

Dirk Von Hacht, Grossbottwar, DE;

Heinz Ambacher, Benningen, DE;

Assignee:

Beru AG, Ludwigsburg, DE;

Attorneys:

Nixon Peabody LLP

Safran; David S.

Primary Examiner:

Nimeshkumar D Patel

Assistant Examiner:

Todd Reed Hopper

Int. Cl.
CPC ...
H01T / ;
U.S. Cl.
CPC ...
313141 ; 313138 ; 313139 ; 445-7 ;
Abstract

A spark plug, especially one for a gas-fueled internal combustion engine has an electrically conducting spark plug body (1), a central electrode (3) which is located in the spark plug body (1) and which is electrically insulated from and projects away from the spark plug body (1), and a ground electrode (4) which is electrically connected to the spark plug body (1) and is made in the form of an annular electrode. The annular electrode (4) surrounds the front part of central electrode (3) such that an annular ignition gap (ZS) is formed between them. Surfaces of the central electrode (3) and the annular electrode (4) bordering the ignition gap (ZS) are provided with precious metal armorings in the form of sleeves (5, 6,), especially of platinum or a platinum alloy. This yields a spark plug with an extremely long service life. A method for producing this spark plug involves the steps of forming a concentric centering groove in the spark plug body for the ground electrode, forming welding cams on the ground electrode, and inserting the ground electrode with the welding cams into the centering groove of the spark plug body and welding the welding cams to the spark plug body.

Find Patent Forward Citations

Knoll, Harald. (2000). Spark plug for an internal combustion engine and process for its (U.S. Patent No. 6064144). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6064144

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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