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Radial fan

  • US 6,164,909 A
  • Filed: 12/03/1998
  • Issued: 12/26/2000
  • Est. Priority Date: 04/03/1997
  • Status: Expired due to Fees
First Claim
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1. An impeller comprising:

  • a hub moveable about a hub axis;

    a plurality of blades having spaced first and second ends, the first ends of the blades attached to the hub;

    an annular nozzle-like plate attached to the second ends of the blades; and

    an annular guide attached to the plate and spaced so as to define a radial passage therebetween.

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