Patent ID: 6729942
Filing Date: 2004-05-04
Classification: A61C,B24C

Abstract:
A handpiece for directing a pressurized abrasive-laden gas stream and a pressurized liquid stream as separate streams to a work area, the handpiece comprising:a elongate handle having a handle centerline, the handle sized to gripped by a hand of a person, the handle having a first end and a second end; a head assembly for attachment to the first end, the head assembly having a head centerline, the head assembly having a nozzle protruding a distance from the head assembly, the nozzle directing the abrasive-laden gas stream emanating from a tip of the nozzle to the work area, the head assembly also having an orifice directing the pressurized liquid stream to the work area; a gas channel receiving the pressurized abrasive-laden gas stream at the second end and directing the pressurized abrasive-laden gas stream through the handle and the head assembly to exit the nozzle, the gas channel having a linear portion comprised of a hard durable material and a curved portion comprised of a flexible material; and a liquid channel receiving the pressurized liquid stream at the second end and directing the pressurized liquid stream through the handle and head assembly to exit the orifice, wherein the gas channel is not confined by the liquid channel and the liquid channel is not confined by the gas channel.