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. 07, 2006
Filed:
Jun. 24, 2004
Hirofumi Sonoda, Narashino, JP;
Kenji Okuyama, Narashino, JP;
Junichi Ibukuro, Narashino, JP;
Takanori Yahaba, Wako, JP;
Masato Takikawa, Wako, JP;
Yasutomo Ichiyama, Tokyo, JP;
Toshiyasu Ukena, Tokyo, JP;
Hirofumi Sonoda, Narashino, JP;
Kenji Okuyama, Narashino, JP;
Junichi Ibukuro, Narashino, JP;
Takanori Yahaba, Wako, JP;
Masato Takikawa, Wako, JP;
Yasutomo Ichiyama, Tokyo, JP;
Toshiyasu Ukena, Tokyo, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A combined YAG laser/arc welding apparatus performs a welding operation with a large depth of fusion and a deep fusion at a high efficiency. The welding apparatus includes an arc electrode which targets a point on a member being welded where a laser beam from a YAG laser is focused. While an arc power supply is connected between the arc electrode and the member being welded, the member being welded is irradiated by the YAG laser to produce plasmoid gasses and metal vapors or a plume which is effective to start an arc from the arc electrode. A combined YAG laser/arc welding operation takes place while keeping the plume within and without a keyhole. Welded surface is covered by a hood, and a shielded gas passed through a commutation metal network surrounds the welded focus to prevent an oxidation and keeps the plume maintained. A filler wire is fed to a molten pool.