Air abrasive particle apparatus

  • US 5,984,677 A
  • Filed: 02/17/1998
  • Issued: 11/16/1999
  • Est. Priority Date: 05/09/1995
  • Status: Expired due to Fees
First Claim
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1. A device for producing a pressurized stream of a gas and suspended abrasive particles, which device comprises(a) a source of a pressurized gas;

  • (b) a source of abrasive particles;

    (c) a mixing means for combining the pressurized gas with said abrasive particles to produce the pressurized stream of gas and suspended particles;

    (d) an inlet line for the pressurized gas to flow to the mixing means;

    (e) an outlet line from the mixing means to carry the pressurized stream of gas and suspended particles away from the mixing means;

    (f) a variable pressure regulator means for controlling the pressure of the gas supplied to the mixing means through the inlet line;

    (g) a first mixing chamber positioned in the outlet line;

    (h) a source of regulated pressurized gas leading to the first mixing chamber to provide dilution of the pressurized stream of gas and suspended particles;

    (i) a nozzle means downstream of the first mixing chamber for delivering the pressurized stream of gas and suspended particles to a surface; and

    (j) a first valve located intermediate of the mixing means and nozzle means for regulating the flow of the pressurized stream of gas and suspended particles to the nozzle means so that the pressurized stream of gas and suspended particles may be directed against a surface to be abraded.

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