Patent Number: 6,168,503

Title: Method and apparatus for producing a high-velocity particle stream

Abstract: A method and apparatus for producing a high-velocity particle stream at low cost through multi-staged acceleration using different media in each stage, the particles are accelerated to a subsonic velocity (with respect to the velocity of sound in air) using one or more jets of gas at low cost, then further accelerated to a higher velocity using jets of water. Additionally, to enhance particle acceleration, a vortex motion is created, and the particles introduced into the fluid having vortex motion, thereby enhancing the delivery of particles to the target.

Inventors: Pao; Y. H. Michael (Houston, TX), Madonna; Peter L. (Auburn, WA), Coogan; Ross T. (Houston, TX)

Assignee: Waterjet Technology, Inc.

International Classification: B24C 5/00 (20060101); B24C 5/04 (20060101); B24B 001/00 ()

Expiration Date: 01/02/2018