Patent Number: 6,296,460

Title: Rotary cavity pump

Abstract: A pump housing supports a plurality of pump segments each having a raised pump cavity enclosed by a resilient diaphragm sealed to the pump cavity. A compression plate supports a plurality of rollers against the pump segments. The compression plate is rotatable with respect to the pump housing to move the rollers across the pump segments deforming the diaphragms and expelling fluid from the pump segments. Fluid passages couple each pump cavity to a source of fluid and a fluid output. As each roller rolls across each diaphragm to expel fluid from the pump segment, the resilience of the diaphragm draws fluid into the pump segment behind the roller to refill the pump segment.

Inventors: Smith; Steve C. (Tustin, CA)


International Classification: F04B 43/12 (20060101); F04B 43/14 (20060101); F04B 043/08 ()

Expiration Date: 10/02/2018