Patent ID: 9744643
Date: 2017-08-29
CPC Classifications: B24C

Claim:
1. Underwater abrasive entrainment waterjet cutting apparatus comprised of: a) a remotely operated vehicle located below the surface of a body of water, which remotely operated vehicle comprises a hydraulic system and at least one prime mover system; b) an entrainment abrasive waterjet cutting head comprising a mixing chamber, a process water inlet to said mixing chamber, and an inlet for particulate abrasive material, which waterjet cutting head is within reach of said remotely operated vehicle; c) a source of particulate abrasive material in fluid communication with said mixing chamber; d) a means capable of feeding said particulate abrasive cutting material to said cutting head in a controlled manner; e) a waterjet pump being within reach of said remotely operated vehicle and in fluid communication with a source of process water, which waterjet pump is capable of delivering a jet of water at a pressure of at least 280 MPa to said waterjet cutting head, wherein said waterjet pump is driven by either the hydraulic system or the prime mover of said remotely operated vehicle.