Abrasive fluid jet system

  • US 5,643,058 A
  • Filed: 08/11/1995
  • Issued: 07/01/1997
  • Est. Priority Date: 08/11/1995
  • Status: Expired due to Term
First Claim
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1. An abrasive fluid jet system comprising:

  • an air isolator having a port through which a volume of abrasive is introduced into the air isolator;

    a baffle positioned within the air isolator to restrict the flow of air and abrasive through the air isolator, the baffle having an opening through which the abrasive may pass;

    a discharge orifice being provided in a surface of the air isolator downstream of the opening in the baffle through which abrasive may exit the air isolator, the discharge orifice being selectively open or closed;

    a metering disk adjacent the discharge orifice such that an orifice in the metering disk is aligned with the discharge orifice and abrasive may flow through the metering disk; and

    a feedline coupled to the metering disk and to a cutting head, the cutting head having a mixing chamber into which the abrasive from the air isolator and a high-pressure fluid jet are introduced, the abrasive and the high-pressure fluid jet being mixed and discharged as an abrasive fluid jet through a mixing tube coupled to the cutting head.

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