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Filter system

  • US 6,488,744 B2
  • Filed: 03/19/2001
  • Issued: 12/03/2002
  • Est. Priority Date: 03/19/2001
  • Status: Expired due to Term
First Claim
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1. A vacuum cleaner comprising a low velocity chamber with a high velocity air inlet positioned near the base of said chamber, a motor, a blade driven by said motor to create a vacuum in said chamber to draw air upwardly in said chamber, an outlet for exhausting air from said chamber, said air flowing in a selected path from said air inlet, through said chamber and out said air exhaust outlet, the improvement comprising a filter at least partially supported on a support member positioned between said air inlet and said motor, said filter including a plurality of rib sections and trough portions between two adjacently positioned rib sections, said support member includes a plurality of fin sections and at least one opening positioned between two adjacent fin sections, said filter includes a flexible material that deforms to form at least one of said rib sections and at least one of said trough portions as air passes through said filter.

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