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Spinning spray head and method

  • US 6,422,480 B1
  • Filed: 11/13/2000
  • Issued: 07/23/2002
  • Est. Priority Date: 11/13/2000
  • Status: Expired due to Fees
First Claim
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1. A nozzle for spraying abrasive particles mixed in water comprising:

  • a housing;

    a spindle rotatable in said housing and having a passage therethrough for the flow of water, a first portion of the passage being approximately coincident with a rotational axis of said spindle and a second portion of the passage having an axis that is angled relative to the first portion of the passage;

    a focal tube positioned in the second portion of the passage through said spindle and rotatable therewith having a bore therethrough for passing the flow of water from said spindle and out of said housing;

    a chamber in the second, angled portion of the passage through said spindle; and

    at least one inlet into said chamber for introducing abrasive particles into the flow of water passing through said spindle, the abrasive particles being mixed with water off-axis rotation of said chamber before the mixture of water and abrasive particles enters the bore through said focal tube.

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