Patent ID: 6267570
Filing Date: 2001-07-31
Classification: F04B

Abstract:
A peristaltic pump for delivering fluid from a source, comprising:a. a fluid inlet, said fluid inlet passing fluid from the source;b. a first flexible conduit having an elongated dimensions said first flexible conduit being connected to and communicating with said fluid inlet, said first flexible conduit further including a fluid outlet;c. a second flexible conduit having an elongated dimension, said second flexible conduit being connected to said fluid inlet, said second flexible conduit further including a fluid outlet, said second flexible conduit being spaced from said first flexible conduit;d. compressing means for pressing said flexible conduit, said compressing means comprising a motor, a shaft axially rotated by said motors at least a first eccentric member locked to said rotating shaft, a first plate located adjacent said first flexible conduit and a first conduit lifter located adjacent said first flexible conduit and in opposition to said first plate, a second plate located adjacent said second flexible conduit, and a second conduit lifter located adjacent said second flexible conduit and in opposition to said second plate, said first conduit lifter contacting only said first flexible conduit along said elongated dimension of said first flexible conduit, said second conduit lifter contacting only said second flexible conduit along said elongated dimension of said second flexible conduit, a first bearing, said first bearing having an inner race contacting said first eccentric member and an outer race contacting said first conduit lifter to move said first conduit lifter and for directing a force against said first flexible conduit to at least partially collapse said first flexible conduit against said first plate during one portion of the axial rotation of said shaft, and a second bearing, said second bearing having an inner race contacting said first eccentric member and an outer race contacting said second conduit lifter to move said second conduit lifter and for directing a force against said second flexible conduit to at least partially collapse said second flexible conduit against said second plate during one portion of the axial rotation of said shaft; andd. check valve means to direct fluid in one direction in said first and second flexible conduits.