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Seal construction for pump apparatus

  • US 5,171,029 A
  • Filed: 08/20/1991
  • Issued: 12/15/1992
  • Est. Priority Date: 04/26/1990
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprising:

  • a pump having a fluid pathway therein;

    a compressible tube made of resilient elastomeric material, said tube having an annular flange at one end thereof and a passage extending longitudinally in the tube and opening at said one end of the tube, said passage forming at least a portion of the fluid pathway and said tube being capable of being compressed by said pump to move fluid through the passage and fluid pathway, said flange being made of resilient elastomeric material and being deformable and integral with the tube, said flange having outer and inner faces;

    a first member having an opening and a flange supporting face surrounding said opening, said outer face engaging said flange supporting face with said opening being in registry with said passage to form a juncture of the passage and the opening; and

    a tube receiving structure receiving said tube and coupled to the first member and including means defining an annular projection engaging said inner face of said flange;

    said annular projection being radially narrower than the inner face of the flange and providing high-unit loading of the flange to deform the flange, said annular projection urging the flange tightly against the supporting face to provide a fluid-tight seal around the juncture of the passage and the opening.

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