Patent ID: 8581139
Filing Date: 2013-11-12
Classification: H05H,Y10T

Abstract:
1. An electrode configured for screwing into an electrode holder in a plasma arc torch, the electrode holder defining an internal female threaded portion having a thread form extending helically and having a major diameter and a minor diameter and having a crest flat and a root flat, the crest flat of the thread form of the female threaded portion being wider than the root flat of the female threaded portion, the electrode comprising: an external male threaded portion having a thread profile extending helically along the electrode and having a major diameter and a minor diameter, the thread profile of the male threaded portion defining a pitch diameter that is not greater than the minor diameter of the female threaded portion of the electrode holder that the electrode is configured to screw into, wherein the thread profile of the male threaded portion comprises a root width and a crest width measured at a mean diameter of said thread profile, the root width being greater than the crest width.