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:
Jan. 29, 2019
Filed:
Mar. 07, 2013
Komatsu Industries Corporation, Kanazawa-shi, Ishikawa, JP;
Komatsu Ltd., Tokyo, JP;
Yoshihiro Yamaguchi, Kaga, JP;
Satoshi Ohnishi, Komatsu, JP;
Katsuo Saio, Hiratsuka, JP;
Kazunori Tsunekawa, Hiratsuka, JP;
Shigeo Morimoto, Yokohama, JP;
KOMATSU INDUSTRIES CORPORATION, Ishikawa, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
A plurality of cutout members are cut out from a plate blank by a plasma arc generated from a plasma torch by a method including a piercing step and a cutting step. In the piercing step, an aperture is formed on an outer peripheral side of a cutout member by maintaining the plasma torch at a first height from the plate blank on the outer peripheral side of the cutout member while the plasma arc is generated from the plasma torch and by moving the plasma torch relative to the plate blank in a horizontal direction. In the cutting step, a continuous cutting groove is formed along an outer contour of the cutout member by setting the plasma torch at a second height lower than the first height and by moving the plasma torch in the horizontal direction along an incision part and a processing line continuing to the incision part.