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. 12, 2013
Filed:
Nov. 05, 2010
Zheng Duan, Hanover, NH (US);
Stephen M. Liebold, Grantham, NH (US);
Aaron D. Brandt, West Lebanon, NH (US);
Zheng Duan, Hanover, NH (US);
Stephen M. Liebold, Grantham, NH (US);
Aaron D. Brandt, West Lebanon, NH (US);
Hypertherm, Inc., Hanover, NH (US);
Abstract
Plasma arc torches described herein include a torch tip with an improved nozzle that provides angular shield flow injection. In particular, the nozzle provides angular/conical impingement of a fluid (e.g., a shield gas) on an ionized plasma gas flowing through a plasma arc torch. Some of the torch tips described herein include a nozzle with a conical external shape combined with a shield with complementing internal geometry to form the angular fluid flow. As a result, a plasma arc torch including the improved nozzle have the benefits of a stabilized ionized plasma gas flow together with enhanced nozzle cooling and protection from reflecting slag during torch use.