Exhaust fan for removing airborne materials

  • US 6,953,491 B2
  • Filed: 04/18/2003
  • Issued: 10/11/2005
  • Est. Priority Date: 08/16/2000
  • Status: Expired due to Term
First Claim
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1. A fan for removing airborne materials from a localized area comprising:

  • a housing having an inlet opening, a discharge opening and an air passageway coupling said inlet and discharge openings;

    a blower unit mounted within said housing to draw air into said inlet opening and to cause said drawn air to travel through said air passageway and exit through said discharge opening; and

    an inlet filter removably secured over said inlet opening to remove from the air drawn into the housing airborne materials that may interfere with the fan'"'"'s ability to operate efficiently.

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