Liquid jet cutting apparatus and method
US3997111A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Sep 22, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C25/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.