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Peristalitic pump

  • US 5,375,984 A
  • Filed: 05/10/1993
  • Issued: 12/27/1994
  • Est. Priority Date: 05/11/1992
  • Status: Expired due to Fees
First Claim
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1. A peristaltic pump comprising:

  • a pump housing having a bottom thereof and a pump wall;

    a rotor in the pump housing having a rotor wall;

    a shaft for the rotor wherein the rotor is rotatable around the shaft;

    a pump tube with an elastically deformable wall, which pump tube is arranged in the pump housing at the bottom thereof and is fitted into the pump housing with a portion which is curved in a part-circular configuration around the shaft of the rotor within the pump wall and at a radial spacing relative thereto;

    wherein the cross-section of the pump tube is partially varied during the conveying operation by at least one component of the rotor which presses the pump tube in respect of cross-section against a support means; and

    wherein the pump housing is dish-like and has in cross section a bottom with a bottom first portion which is formed approximately at a right angle on the pump wall and a bottom second portion which is inclined from the bottom first portion towards the rotor at an angle of inclination (w), and wherein said portions define a channel space in the pump housing in which the rotor wall engages.

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