Patent · US Active

Electrode for plasma torch with novel assembly method and enhanced heat transfer

US8779323B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Inventors

Koustubh Dnyandeo Ashtekar · Dorpsstraat, US
David C. Griffin · Florence, US
Gregory W. Diehl · Florence, US
Dale T. Wiersema · Florence, US

Key dates

Filing date	Dec 17, 2013
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Dec 17, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH05H1/3478
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Embodiments of the present invention are related to an electrode for a plasma arc torch, the electrode comprising a generally tubular outer wall, an end wall, and a protrusion. The end wall is joined to a distal end of the outer wall and supports an emissive element in a generally central region. The protrusion extends from the generally central region of the end wall and is configured to connect with an electrode holder by a releasable connection, wherein the protrusion is configured such that at least one coolant passage forms between the protrusion and the electrode holder when the electrode is connected with the electrode holder. In some embodiments, the releasable connection comprises a threaded connection, wherein the protrusion is threaded to releasably connect to a threaded coolant tube of the electrode holder. In other embodiments, at least one coolant passage is defined by the threaded connection.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.