Swirl control through electrode geometry

US12245354B2 · kind B2 · utility

Assignee

• Hypertherm, Inc. · US

Inventors

• Faraz Mehdi · Hanover, US
• Yu Zhang · Hanover, US
• Steven Moody · Charlestown, US
• Brenda Melius · Hanover, US
• Jesse A. Roberts · Colchester, US
• David J. Cook · Bradford, US

Key dates

• Filing date: Dec 23, 2021
• Grant date: Mar 4, 2025
• Expiry date: Apr 18, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05H1/3405
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A translatable electrode for use in a cartridge assembly for a contact start plasma arc torch including an electrode body having a longitudinal axis and including a proximal end and a distal end. The proximal end including a spiral groove and a contact surface at a proximal end face shaped to electrically communicate with a cathodic element. The translatable electrode also including at least one emissive insert disposed within the distal end of the electrode body and proximate a distal end face. The translatable electrode including at least one baffle disposed between the proximal and distal end of the electrode body. The translatable electrode also including a gas flow dampening region disposed circumferentially about the distal end and adjacent the distal end face and positioned between the at least one baffle and the distal end face.