Electric lamp or space discharge component or device manufacturi – Process – Spark plug or spark gap making
Reexamination Certificate
2005-03-22
2005-03-22
Glick, Edward J. (Department: 2882)
Electric lamp or space discharge component or device manufacturi
Process
Spark plug or spark gap making
C313S141000, C313S118000
Reexamination Certificate
active
06869328
ABSTRACT:
An electrode and spark plug for an internal combustion engine including an electrode of this type as a center electrode. The electrode includes an electrode base element made of a first material and an end section that is integrally joined to the electrode base element, with this end section including a first area that is integrally joined to the first material and is made of a platinum-containing material and including a second area that is integrally joined to the first area and is made of an iridium-containing and/or ruthenium-containing material. In a method for manufacturing an electrode of this type, a first recess is stamped in the electrode base element, a first preform is inserted into the first recess, the first preform is melted, thereby forming a first alloy, a second recess is stamped in an area of the first alloy, a second preform is inserted into the second recess, and the second preform is melted, thereby forming a second alloy.
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Fischer Jochen
Ulm Heinz
Glick Edward J.
Keaney Elizabeth
Kenyon & Kenyon
Robert & Bosch GmbH
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