Patent ID: 6050787
Filing Date: 2000-04-18
Classification: F04B

Abstract:
A pump comprising:a magnetically responsive elastic tube stretched onto and thereby sealing to and encasing a shaft, said shaft having first and second ends with inlet and outlet ports adjacent to said ends;an enclosing body containing electrical hardware which forms a magnetic field generation means for generating and axially moving a magnetic field along said shaft, the magnetic field initially surrounding the inlet port of said shaft, the said tube responding by expanding circumferentially in magnetic attraction towards the magnetic field so creating a volume between said tube and said shaft;the lengths of tube outside the influence of the magnetic field remaining sealed to said shaft such that subsequent movement of the magnetic field along the axis of said shaft transports the material enclosed within said volume along said shaft from the inlet port to the outlet port;reduction of the magnetic field following transport of the material from said inlet to said outlet port resulting in exhaustion of the volume, repetition of this cycle creating a pumping action.