Flexible tube positive displacement pump

In a peristaltic pump system in which rotating pressure rollers are driven by a gear reduction system and are structured and arranged to revolve through a chamber with the outer surfaces of said rollers constituting pressure surfaces in contact with a flexible tube, whereby to cause positive displacement pumping action through said tube, the improvement comprising a reaction surface, positioned opposite said rotating pressure elements, said flexible tube being positioned intermediate said rotating pressure elements and said reaction surface, said flexible tube being compressed by said rotating pressure rollers and said reaction surface each of said pressure rollers having a respective follower gear secured thereto, each said follower gear being intercooperated with a drive gear and further being incorporated into said gear reduction system.

A peristaltic pump system, comprising:

• rotating pressure rollers, each pressure roller incorporating a respective follower gear, each said respective follower gear being meshed with a drive gear, each said respective follower gear being incorporated within and constituting an element of a gear reduction system structured and arranged to revolve through a chamber with the outer surfaces of said rollers constituting pressure surfaces in contact with a flexible tube, whereby to cause positive displacement pumping action through said tube, and
• a reaction surface, positioned opposite said rotating pressure elements, said flexible tube being positioned intermediate said rotating pressure elements and said reaction surface, said flexible tube being compressed by said rotating pressure elements and said reaction surface.