Patent ID: 8197233
Filing Date: 2012-06-12
Classification: F04B

Abstract:
1. A pump comprising: a housing; a plurality of diaphragm assemblies radially disposed within the housing, each diaphragm assembly of the plurality of diaphragm assemblies comprising a diaphragm; a drive element configured to be eccentrically coupled to a rotating shaft motor to actuate the diaphragm for each of the plurality of diaphragm assemblies to draw fluid into or expel fluid from the diaphragm assembly; the drive element comprising: wherein during actuation of each diaphragm of the plurality of diaphragm assemblies, the corresponding first member, second member and spring support provide a continuously rigid radial coupling with the diaphragm, the second member maintaining radial support of the diaphragm while remaining substantially perpendicular to the direction of radial support during pump operation.