Back to results
US 6,191,380 B1Granted
Plasma arc torch head
OwnerHughen Gerrard Thomasinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerHughen Gerrard Thomasinventor
Estimating the term…
A method of centering an electrode in the nozzle of a plasma arc torch head is disclosed. The method involves complementing the external wall of the swirl to the internal taper of the nozzle; complementing the internal wall of the swirl to the external taper of the electrode; fitting the hollow tapered swirl so formed in the hollow nozzle to abut the inner taper of the nozzle; and fitting the electrode in the hollow swirl to abut the inner taper of the swirl to center the electrode within the nozzle. Also disclosed is a head for a plasma arc cutting torch which includes a a swirl located between the nozzle and the electrode, through which plasma fuel gas is introduced into the nozzle, characterized in that the plasma fuel gas is introduced directly into the plasma formation zone or plenum beyond the junction between the nozzle body and cone end thereby avoiding change in direction within the conical end of the nozzle before the plasma formation zone.
A method of centering an electrode in the nozzle of a plasma arc torch head consisting of an electrode with an operative front tapered end, a nozzle having an operative front tapered end and a swirl, comprising the steps of:
A head for a plasma arc torch consisting of an electrode, a tapered nozzle and a swirl in which the swirl is defined by a hollow body of insulated, high temperature resistant material with a conical end, the outer wall of the swirl body being complementary to inner wall of the conical end of the nozzle;
A head for a plasma arc cutting torch comprising:
Dependencies are inferred from the claim text.