Inventor
COUCH JR RICHARD W
US32 patents
⚠️ This page may combine multiple inventors who share the name “COUCH JR RICHARD W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HYPERTHERM INC
28 patentsUS5695662ADec 9, 1997
Plasma arc cutting process and apparatus using an oxygen-rich gas shield
HYPERTHERM INC167 citations99
US5132512AJul 21, 1992
Arc torch nozzle shield for plasma
HYPERTHERM INC170 citations99
US4902871AFeb 20, 1990
Apparatus and process for cooling a plasma arc electrode
HYPERTHERM INC170 citations99
US4791268ADec 13, 1988
Arc plasma torch and method using contact starting
HYPERTHERM INC163 citations99
US5897795AApr 27, 1999
Integral spring consumables for plasma arc torch using blow forward contact starting system
HYPERTHERM INC133 citations98
US5396043AMar 7, 1995
Plasma arc cutting process and apparatus using an oxygen-rich gas shield
HYPERTHERM INC110 citations98
US5317126AMay 31, 1994
Nozzle and method of operation for a plasma arc torch
HYPERTHERM INC133 citations97
US5841095ANov 24, 1998
Apparatus and method for improved assembly concentricity in a plasma arc torch
HYPERTHERM INC100 citations96
US5601734AFeb 11, 1997
Electrode for a plasma arc torch
HYPERTHERM INC52 citations96
US5591357AJan 7, 1997
Plasma arc cutting process and apparatus using an oxygen-rich gas shield
HYPERTHERM INC71 citations96
US5464962ANov 7, 1995
Electrode for a plasma arc torch
HYPERTHERM INC48 citations96
US5170033ADec 8, 1992
Swirl ring and flow control process for a plasma arc torch
HYPERTHERM INC88 citations96
US5166494ANov 24, 1992
Process and apparatus for reducing electrode wear in a plasma arc torch
HYPERTHERM INC85 citations96
US5120930AJun 9, 1992
Plasma arc torch with improved nozzle shield and step flow
HYPERTHERM INC60 citations96
US5070227ADec 3, 1991
Proceses and apparatus for reducing electrode wear in a plasma arc torch
HYPERTHERM INC82 citations96
US4861962AAug 29, 1989
Nozzle shield for a plasma arc torch
HYPERTHERM INC93 citations96
US7659488B2Feb 9, 2010
Composite electrode for a plasma arc torch
HYPERTHERM INC39 citations95
US5653896AAug 5, 1997
Process for high quality plasma arc and laser cutting of stainless steel and aluminum
HYPERTHERM INC39 citations95
US5380976AJan 10, 1995
Process for high quality plasma arc and laser cutting of stainless steel and aluminum
HYPERTHERM INC93 citations95
US5414236AMay 9, 1995
Process for high quality plasma arc cutting of stainless steel and aluminum
HYPERTHERM INC28 citations93
US4816637AMar 28, 1989
Underwater and above-water plasma arc cutting torch and method
HYPERTHERM INC31 citations93
US4421970ADec 20, 1983
Height sensing system for a plasma arc cutting tool
HYPERTHERM INC50 citations93
US5760363AJun 2, 1998
Apparatus and method for starting and stopping a plasma arc torch used for mechanized cutting and marking applications
HYPERTHERM INC64 citations92
US5756959AMay 26, 1998
Coolant tube for use in a liquid-cooled electrode disposed in a plasma arc torch
HYPERTHERM INC76 citations92
US5548097AAug 20, 1996
Plasma arc cutting torch ignition circuit and method providing a forced arc transfer function
HYPERTHERM INC30 citations92
US5310988AMay 10, 1994
Electrode for high current density plasma arc torch
HYPERTHERM INC32 citations90
US5558786ASep 24, 1996
Process for high quality plasma arc and laser cutting of stainless steel and aluminum
HYPERTHERM INC16 citations81
US7049540B2May 23, 2006
Process and apparatus for cutting or welding a workpiece
HYPERTHERM INC9 citations73