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Volumetric pump tube reshaper and method

  • US 5,322,422 A
  • Filed: 02/01/1993
  • Issued: 06/21/1994
  • Est. Priority Date: 03/15/1990
  • Status: Expired due to Fees
First Claim
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1. Apparatus for compressing and shaping a flexible tube, comprising:

  • a. single plunger means, mounted to move bidirectionally along a reciprocation axis, for periodically alternately compressing a segment of the flexible tube to displace a fluid from an interior passage disposed within the flexible tube, and then allowing the flexible tube to expand to at least a partially uncompressed condition;

    b. drive means, for periodically driving the plunger means to move along the reciprocation axis; and

    c. tube reshaper means, actuated by the motion of the plunger means, for applying a reshaping force transversely against substantially the same segment of the flexible tube that was compressed, the reshaping force tending to expand the interior passage to a maximum desired volume.

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