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.

Date of Patent:
Apr. 13, 1993

Filed:

Dec. 30, 1991
Applicant:
Inventors:

Shigeru Nakayama, Kobe, JP;

Hisao Hasegawa, Kobe, JP;

Masaki Tanaka, Kobe, JP;

Katsumi Miyagawa, Kobe, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ;
Abstract

A root pass bead welding method for joining two metal base members includes forming a dike bead by welding on a rear surface of one metal base member, and placing the dike bead against or in the vicinity of a distal end of a rear surface of another metal base member to define a groove open at the front surface of the same. Then welding is performed from the front surface of the other metal base member at the groove to form a root pass bead extending between the dike bead and the rear surface of the other metal base member.


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