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. 31, 2005
Filed:
Sep. 05, 2001
Susumu Tsukamoto, Ibaraki, JP;
Isao Kawaguchi, Ibaraki, JP;
Goro Arakane, Ibaraki, JP;
Hiroshi Honda, Ibaraki, JP;
Susumu Tsukamoto, Ibaraki, JP;
Isao Kawaguchi, Ibaraki, JP;
Goro Arakane, Ibaraki, JP;
Hiroshi Honda, Ibaraki, JP;
National Institute for Materials Science, Ibaraki, JP;
Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo, JP;
Abstract
In a laser welding method, occurrence of weld defects is effectively prevented, and a high-quality weld joint is provided, and in addition, a wide range of material processes including a laser-using de p-penetration welding technique can be implemented. In keyhole welding using a laser performing output pulse modulation, the welding is conducted in accordance with a frequency conforming to a natural frequency of a metal molten pool.