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:
Dec. 09, 2003
Filed:
Dec. 11, 2001
Applicant:
Inventor:
Takeshi Hanai, Kuwana, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 1/320 ;
U.S. Cl.
CPC ...
H01T 1/320 ;
Abstract
First and second guides of a guide jig are removed from a tip in a direction normal to an axial direction of the tip. This surely prevents the guide jig from touching and moving the tip when the guide jig departs from the tip. Accordingly, the welding operation can be performed properly under a condition that the tip is accurately positioned on a ground electrode. Thus, it becomes possible to reduce a manufacturing error of the discharge gap formed between a center electrode and the ground electrode.