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Self-regenerating pressurized filtering system for liquids

  • US 5,389,243 A
  • Filed: 09/28/1992
  • Issued: 02/14/1995
  • Est. Priority Date: 09/28/1992
  • Status: Expired due to Fees
First Claim
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1. A filter system comprisinga fluid tight housing;

  • one or more filter elements dividing said housing interior into a first chamber and a second chamber, each filter element including a perforate support structure and a filter-aid powder coating said support structure;

    means for introducing a liquid under pressure into said first chamber so that said liquid flows from said first chamber through each filter element into the second chamber;

    means for conducting liquid from the second chamber;

    pumping means in said housing for increasing the fluid pressure in said second chamber;

    energy storage means in said housing and responsive to a pressure differential between said first and second chambers for storing energy, andmeans responsive to a pressure change in one of said chambers for applying the energy stored by said energy storage means to drive said pumping means so as to produce liquid backflow through each filter element.

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