Jule Conner

US Patent:

50138855, May 7, 1991

Filed:

Feb 28, 1990

Appl. No.:

7/486070

Inventors:

Donald W. Carkhuff - Florence SC
Jeffrey S. Everett - Florence SC
Jule Conner - Marion SC

Assignee:

ESAB Welding Products, Inc. - Florence SC

International Classification:

B23K 900

US Classification:

2191215

Abstract:

A nozzle for use with a plasma arc torch having a first gas flow within the nozzle for engaging an electrode and generating a plasma and a second gas flow in surrounding engagement to the outer surface of the nozzle is disclosed. The nozzle includes an outer surface of substantially hourglass configuration in longitudinal cross-section so that the second gas remains in close contact with the outer hourglass surface of the nozzle to provide efficient heat transfer from the nozzle to the surrounding second gas flow.