Clarifier cover

  • US 6,612,079 B2
  • Filed: 04/12/2002
  • Issued: 09/02/2003
  • Est. Priority Date: 06/21/2000
  • Status: Expired due to Term
First Claim
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1. In combination, a clarifier and a clarifier cover mounted over said clarifier for retaining off-gases inside said clarifier;

  • said clarifier having an upper opening defined by edges comprising a first and second opposite edges;

    said clarifier cover comprising;

    a plurality of trusses extending across said opening between said first and second opposite edges;

    a flexible sheet laid over said trusses and having a first and second opposite margins;

    means for retaining and sealing said first margin to said first edge;

    means for pulling and releasably sealing said second margin to said second edge, comprising winch means affixed to said second edge.

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