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:
Mar. 01, 1988
Filed:
Dec. 03, 1986
Applicant:
Inventor:
Toshihiro Nishiwaki, Kawasaki, JP;
Assignee:
Obara Kinzoku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219120 ; 219119 ;
Abstract
A resistance welding electrode includes a barrel-shaped portion having a cooling water passage defined therein and extending closely to an end surface thereof, and a cylindrical projection integrally formed on the end surface of the barrel-shaped portion. The cylindrical projection has a helical groove defined therearound, and may additionally have another helical groove defined therearound parallel to the first-mentioned helical groove in 180.degree.-out-of-phase relation thereto. The cylindrical projection may have an axial slot defined in its circumferential surface across the helical groove.