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:
Dec. 24, 2019
Filed:
Jun. 24, 2016
Koike Sanso Kogyo Co., Ltd., Tokyo, JP;
Koike Sanso Kogyo Co., Ltd., Tokyo, JP;
Abstract
The present invention is a plasma cutting apparatus (A) configured such that a starting gas is switched to plasma gas at the stage when current is applied to an electrode provided to a plasma torch, and a plasma arc is produced at a preset current value on a material (B) to be cut, so as to extend the life of the electrode, wherein the apparatus is configured to have: a starting gas supply unit () having a starting gas solenoid valve () provided with a starting gas supply source () and a starting gas pipeline (); a plasma gas supply unit () having a plasma gas solenoid valve () provided with a plasma gas supply source () and a plasma gas pipeline (); a plasma gas connection part () for connecting the downstream-side end part of the starting gas supply unit and the downstream-side end part of the plasma gas supply unit; a gas pipeline part () for connecting the plasma gas connection part () and a torch body (); a flow retention member () provided to the gas pipeline part; and a control device () for controlling the opening and closing of the solenoid valves, and controlling the flow retention member.