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Filter cleaning mechanisms

  • US 7,799,103 B2
  • Filed: 04/03/2008
  • Issued: 09/21/2010
  • Est. Priority Date: 04/04/2007
  • Status: Expired due to Fees
First Claim
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1. A filter cleaning mechanism for a vacuum comprising:

  • a flexible first frame supporting a first filter material, the first filter material filtering dirt particles passing therethrough, the first frame having a first end surface with teeth thereon,a second frame having ribs on an end surface,the first frame positioned inside the second frame so that the first frame teeth are adjacent the second frame ribs, wherein as the first frame is rotated with respect to the second frame, the teeth contact the ribs and the first frame is compressed and uncompressed as it rotates.

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