Two-cycle peristaltic pump

Details Two-cycle peristaltic pump Two-cycle peristaltic pump

F - Mech Eng,Light,Heat,Weapons

04

B

103/31

F04B 43/08 (2006.01) A61M 5/142 (2006.01)

Patent

CA 2026518

A device for pumping fluid through a resilient tube has a platen for holding the tube and a pumping mechanism for squeezing the tube against the platen. The pumping mechanism includes a first pumping finger which squeezes the tube at a first location and a second pumping finger which squeezes the tube at a second location. For their respective alternating pumping actions, the first finger is configured and operated to displace approximately twice the fluid volume displaced by the second pumping finger. A valve means is also mounted on the base and is positioned to alternately occlude the tube upstream from the first and second pumping fingers during the pumping action of the first pumping finger and to occlude the tube between the first and second locations upstream from the second pumping finger during the pumping action of the second pumping finger.

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