Canadian Liquid Air Ltd - Air Liquidecanada Ltee

Richard Goulet

Michel Landry

Viwek V Vaidya

Claude Forest

Pierre Beaubien

Michael Finkelstein

Tom J Dixon

A multi-part oxy-fuel cutting tip has mixture outlet passages formed in the tip skirt to form grooves. The grooves then cooperate with the tip core to form the outlet passages when the skirt is placed over the tip core. Oppositely directed circumferential inlet passages for the preheat oxygen and fuel promote rapid mixing while producing a non-rotating mixture flow. In addition, the sectional areas of the outlet passages decrease in the flow direction. The tip core has an annular chamfer at its outlet end. These features promote the rapid creation of a laminar mixture flow.

Oxy-fuel cutting tip having gas outlet passages

A multi-part oxy-fuel cutting tip has mixture outlet passages formed by swaging the tip skirt to form grooves. The grooves then cooperate with the tip core to form the outlet passages when the skirt is placed over the tip core. Oppositely directed circumferential inlet passages for the preheat oxygen and fuel promote rapid mixing while producing a non-rotating mixture flow. In addition, the sectional areas of the outlet passages decrease in the flow direction. These features promote the rapid creation of a laminar mixture flow.

Oxy-fuel cutting tip having swaged gas outlet passages

A cutting oxygen flow control valve in a cutting torch has a poppet movably positioned in a cutting oxygen passageway upstream of a valve seat. The poppet has openings at a downstream end of the cylindrical wall thereof so that these openings are exposed upon movement of the poppet as a manually controlled diaphragm lifts off the valve seat. The progressive exposure of the openings provides for cutting oxygen flow past the valve, thereby producing a desired progression in the flow rate.

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Montreal, Canada

Richard Goulet