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Durable filter cage for air-moving system

  • US 7,291,195 B2
  • Filed: 11/20/2006
  • Issued: 11/06/2007
  • Est. Priority Date: 11/23/2005
  • Status: Active Grant
First Claim
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1. An air-moving system coupled with a filter, comprising:

  • a cage adapted to be fixedly coupled to a vacuum intake portion of the air-moving system, the cage having a longitudinal axis and comprising;

    one or more longitudinally angled ribs disposed at an angle greater than zero degrees and less than 90 degrees to the longitudinal axis and spaced a distance from the longitudinal axis about a perimeter of the cage.

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