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US 3,997,111 AGranted
Liquid jet cutting apparatus and method
AssigneeFlow Research, Inc.
InventorsBenjamin A. Thomas, Edward W. Geller
Life of this patent
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AssigneeFlow Research, Inc.
InventorsBenjamin A. Thomas, Edward W. Geller
Estimating the term…
A high velocity, constant flow, liquid jet cutting apparatus comprising a source of high pressure fluid, a jet nozzle, and a high pressure conduit to carry the fluid from the source to the jet nozzle. Immediately upstream of the jet nozzle is a liquid collimating device comprising a housing interconnected between the conduit and the nozzle and defining a flow collimating chamber directly upstream of the nozzle, through which the high pressure liquid is delivered to the nozzle. The cross sectional area of the flow collimating chamber is at least greater than 100 times the cross sectional area of the nozzle opening, and desirably in the order of four hundred times as great or more. The resulting liquid jet has relatively little dispersion of the liquid and is capable of effectively cutting a relatively narrow kerf with a high quality finish and little, if any, wetting.
In a high velocity, constant flow, liquid jet cutting apparatus, where there is a source of a high pressure liquid, a high velocity nozzle having a nozzle opening of a predetermined cross sectional area through which said liquid is directed as a high velocity liquid cutting jet, and high pressure conduit means to deliver the liquid from said source to the nozzle,
In a process of high velocity, constant flow, liquid jet cutting, where high pressure fluid is directed from a high pressure source through a conduit and thence through a nozzle opening of a predetermined cross sectional area to provide a high velocity relatively thin cutting jet,
Dependencies are inferred from the claim text.