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1. (WO2001005554) APPARATUS AND METHOD FOR ORBITING AN ULTRA HIGH PRESSURE LIQUID STREAM

Pub. No.:    WO/2001/005554    International Application No.:    PCT/US2000/018870
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Wed Jul 12 01:59:59 CEST 2000
IPC: B24C 1/00
Applicants: SHEPHERD, John, D.
Inventors: SHEPHERD, John, D.
Title: APPARATUS AND METHOD FOR ORBITING AN ULTRA HIGH PRESSURE LIQUID STREAM
Abstract:
A waterjet head (14) is resiliently supported at one location along its axis and is pivotally supported at another, axially spaced. The head (14) is driven in a pivotally, oscillating manner by a drive system (62) including a rotary motor (80) and an eccentric (96). The outlet nozzle (40) of the waterjet head (14) pivots in an orbital path so that the UHP liquid or liquid/abrasive stream discharged from the nozzle (40) describes an orbital path on an adjacent workpiece surface (58), enabling the stream to carry out a uniform surface treatment operation such as cleaning, polishing or milling without damaging the workpiece surface (58).