US Patent No. 10,194,517

PLASMA ARC CUTTING SYSTEM, CONSUMABLES AND OPERATIONAL METHODS


Patent No. 10,194,517
Issue Date January 29, 2019
Title Plasma Arc Cutting System, Consumables And Operational Methods
Inventorship Madhura S. Mitra, Lebanon, NH (US)
Stephen M. Liebold, Grantham, NH (US)
Harshawardhan Jogdand, Lebanon, NH (US)
Adam Chevalier, Orford, NH (US)
John Peters, Canaan, NH (US)
Soumya Mitra, Lebanon, NH (US)
Assignee Hypertherm, Inc., Hanover, NH (US)

Claim of US Patent No. 10,194,517

1. An electrode for a liquid cooled plasma arc torch, the electrode comprising:a body having a longitudinal axis defining a first end, a second end, and a middle portion between the first and second ends;
a first sealing element disposed on an exterior of the body near the first end of the body, the first sealing element configured to provide a liquid seal;
a second sealing element disposed on the exterior of the body, the second sealing element located in the middle portion between the first sealing element and the second end of the body along the longitudinal axis, the second sealing element configured to provide a first gas seal to a swirl gas chamber and defining a portion of the swirl gas chamber; and
a third sealing element disposed on the exterior of the body, the third sealing element located between the second sealing element and the second end of the body along the longitudinal axis, the third sealing element configured to provide a second gas seal to the swirl gas chamber and defining a portion of the swirl gas chamber.