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.:
Date of Patent:
Oct. 18, 1983
Filed:
Jan. 16, 1981
Applicant:
Inventors:
Dieter Stockel, Birkenfeld, DE;
Friedrich Schneider, Pforzheim, DE;
Assignee:
G. Rau GmbH & Co., Pforzheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T / ;
U.S. Cl.
CPC ...
445-7 ; 228155 ;
Abstract
A spark plug center electrode comprises a core of material having good thermal conductivity surrounded by a sheath of corrosion resisting material. During manufacture of the electrode, the core is joined to the sheath by means of a welded joint which extends only over the zone of the inner basal surface of the sheath part.