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:
Jun. 12, 1984
Filed:
Jul. 27, 1981
Applicant:
Inventors:
Ryoichi Kajiwara, Hitachi, JP;
Satoshi Kokura, Hitachiohta, JP;
Yuzo Kozono, Hitachi, JP;
Akira Onuma, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912434 ; 21913001 ; 21913051 ;
Abstract
An electric power supply in pulse form is applied between a welding electrode and workpieces. The temperature of a molten pool is measured by a radiation-type thermometer when no power supply pulse is applied, and the welding condition is controlled in response to an output signal of the radiation-type thermometer.