Patent · US Active

Electrode for a contact start plasma arc torch and contact start plasma arc torch employing such electrodes

US8546718B2 · kind B2 · utility

20Cited by

17References

34Claims

0Family size

Assignee

Hypertherm, Inc. · US

Inventors

Jonathan Mather · Grafton, US
Stephen T. Eickhoff · Hanover, US
Jesse A. Roberts · Colchester, US

Key dates

Filing date	Dec 20, 2011
Grant date	Oct 1, 2013
Priority date	—
Expiry date	Dec 20, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH05H1/3489
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An electrode for a contact start plasma arc torch includes an elongated electrode body formed of an electrically conductive material. The electrode body is movable relative to the torch. A resilient element, contacting a proximal end of the electrode body, is used for imparting a separation force to the electrode body. The electrode body is adapted to overcome the separation force and engage a contact element of the torch when the torch is operated in a transferred arc mode.

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