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:
May. 19, 1987
Filed:
Dec. 23, 1985
Applicant:
Inventors:
Nobuo Shibata, Ibaraki, JP;
Akira Hirai, Ibaraki, JP;
Jun Nakajima, Chiba, JP;
Kenji Mori, Tsuchiura, JP;
Toshio Akatsu, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912434 ; 901 42 ; 901 47 ;
Abstract
A welding position detecting apparatus provided on a welding torch which forms an arc between a welding wire and a groove face on a work piece. The apparatus has an optical system for irradiating the groove face with a converging ray at a point in advance of the point of the arc so as to form a groove face crossing image, and an observing optical system which introduces this groove face crossing image and an arc image into its field of view and by which the groove face crossing image and the arc image are detected at the same time.