Patent ID: 6099272
Filing Date: 2000-08-08
Classification: F04B

Abstract:
A rotary peristaltic pump comprising:a) a rotor adapted for rotation about a first axis;b) a plurality of compression devices mounted on the rotor; wherein the compression devices move in a path about the first axis when the rotor is rotated;c) a race positioned about a first portion of the path of the plurality of compression devices; andd) a torque control cam positioned about a second portion of the path of the plurality of compression devices, wherein the pump is adapted to compress a portion of tubing located between the race and at least one of the plurality of compression devices along the first portion of the path while at least one of the plurality of tube compression devices acts against the torque control cam along the second portion of the path, and further wherein the torque control cam is located such that the torque required to move the plurality of compression devices through the second portion of the path is at a maximum when the torque required to move the plurality of compression devices through the first portion of the path is at a minimum.