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Filter cap affixed to a filter sleeve

  • US 5,580,456 A
  • Filed: 06/01/1995
  • Issued: 12/03/1996
  • Est. Priority Date: 12/16/1993
  • Status: Expired due to Term
First Claim
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1. A cap for sealing an end of a filter sleeve that consists essentially of:

  • a cap comprising an interior surface, an exterior surface and an outer circumferential ring connecting said interior and said exterior surfaces, the cap being adapted to fit said outer circumferential ring within an end of a filter sleeve with said interior surface facing into the sleeve;

    a center hub and at least one projection on said interior surface to permit the cap to interface with a base of an interior perforated tube.

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