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:
Oct. 24, 2006
Filed:
Jul. 07, 2005
Thierry R. Renault, West Lebanon, NH (US);
Nakhleh A. Hussary, West Lebanon, NH (US);
Darrin H. Mackenzie, Windsor, VT (US);
Christopher J. Conway, Wilmot, NH (US);
Kevin D. Horner-richardson, Cornish, NH (US);
Thierry R. Renault, West Lebanon, NH (US);
Nakhleh A. Hussary, West Lebanon, NH (US);
Darrin H. MacKenzie, Windsor, VT (US);
Christopher J. Conway, Wilmot, NH (US);
Kevin D. Horner-Richardson, Cornish, NH (US);
Thermal Dynamics Corporation, West Lebanon, NH (US);
Abstract
A gas distributor for use in a plasma arc torch is provided that has at least one plasma gas passageway formed conjointly with a metering passageway, and at least one helical gas passageway formed along an interior portion of the gas distributor, wherein the helical gas passageway is in fluid communication with the plasma gas passageway and the metering passageway. The combination of the metering passageway and the helical gas passageway provides for a metered flow rate and a controlled swirling flow of plasma gas within the plasma arc chamber, respectively, which functions to reduce the amount of molten emissive insert that is ejected from within an electrode at arc shut off, thereby resulting in an increased life of the consumable electrode.