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Pump chamber having at least one spacer for inhibiting the pumping of a gas

  • US 6,382,923 B1
  • Filed: 07/20/1999
  • Issued: 05/07/2002
  • Est. Priority Date: 07/20/1999
  • Status: Expired due to Term
First Claim
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1. A pump chamber, comprising:

  • a volumetric container;

    a flexible membrane comprising at least a portion of a wall of said container in contact with a fluid contained within the container;

    at least one spacer positioned within said container to contact at least a portion of the flexible membrane in contact with the fluid so as to inhibit contact between the flexible membrane and an internal surface of said container.

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