US 11,986,900 B2
Cathode seated liquid coolant tube for a plasma arc cutting system
Harshawardhan Jogdand, Lebanon, NH (US); Oliver Murphy, Hartland, VT (US); Jeremy Beliveau, Cornish, NH (US); Stephen M. Dunbar, Lebanon, NH (US); and Girish Kamath, Lebanon, NH (US)
Assigned to Hypertherm, Inc., Hanover, NH (US)
Filed by Hypertherm, Inc., Hanover, NH (US)
Filed on Mar. 16, 2021, as Appl. No. 17/203,610.
Claims priority of provisional application 62/990,176, filed on Mar. 16, 2020.
Prior Publication US 2021/0283709 A1, Sep. 16, 2021
Int. Cl. B23K 10/00 (2006.01); H05H 1/28 (2006.01); H05H 1/38 (2006.01)
CPC B23K 10/00 (2013.01) [H05H 1/28 (2013.01); H05H 1/38 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A liquid coolant tube for a plasma arc cutting torch, the liquid coolant tube comprising:
a hollow elongated inner body shaped to translate within a hollow elongated outer body; and
the hollow elongated outer body comprising a set of electrode guides extending along an outer surface of the hollow elongated outer body, the hollow elongated outer body shaped to fixedly connect to the plasma arc cutting torch,
wherein an external surface of the hollow elongated outer body and the set of electrode guides partially define a set of coolant flow channels extending along an outer surface of the hollow elongated outer body between the set of electrode guides, the set of electrode guides shaped to facilitate alignment of an electrode within the plasma arc cutting torch.