Invention Grant
- Patent Title: Plasma arc torch providing angular shield flow injection
- Patent Title (中): 等离子弧焊提供角度屏蔽流注射
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Application No.: US11407370Application Date: 2006-04-19
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Publication No.: US07829816B2Publication Date: 2010-11-09
- Inventor: Zheng Duan , Stephen M. Liebold , Aaron D. Brandt
- Applicant: Zheng Duan , Stephen M. Liebold , Aaron D. Brandt
- Applicant Address: US NH Hanover
- Assignee: Hypertherm, Inc.
- Current Assignee: Hypertherm, Inc.
- Current Assignee Address: US NH Hanover
- Agency: Proskauer Rose LLP
- Main IPC: B23K10/00
- IPC: B23K10/00

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.
Public/Granted literature
- US20070007256A1 Plasma arc torch providing angular shield flow injection Public/Granted day:2007-01-11
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