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:
Apr. 25, 2000
Filed:
May. 20, 1998
Applicant:
Inventor:
Joseph V Warren, Jr, Florence, SC (US);
Assignee:
The ESAB Group, Inc., Florence, SC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912139 ; 21912144 ; 21912154 ; 21912155 ;
Abstract
A plasma marking torch for marking metal workpieces with lines, numbers, or symbols, and which utilizes a non-cutting plasma gas such as argon, and a shield gas which comprises an air/water mist mixture. In one disclosed embodiment, the shield gas passes serially into contact with the electrode and the nozzle so as to efficiently cool the same, and it then passes through an annular orifice surrounding the bore of the nozzle to the workpiece. In another embodiment, provision is made for selectively operating the torch either in a cutting mode, or a marking mode.