Patent ID: 7267532
Filing Date: 2007-09-11
Classification: F04C

Abstract:
1. A magnetically driven gear-pump head, comprising: a pump housing having a pump axis and defining a pump cavity; a driven magnet that is rotatable about the pump axis, the driven magnet comprising a first driving gear; and a pump driving gear having a first gear axis and a pump driven gear having a second gear axis, the first gear axis being parallel to but laterally offset from the pump axis on a first side of the pump axis, and the second gear axis being parallel to but laterally offset from the pump axis on a second side of the pump axis, the pump gears being situated in the pump cavity and being configured to interdigitate with each other such that rotation of the pump driving gear causes a corresponding contrarotation of the pump driven gear in the pump cavity, the pump driving gear comprising a second driving gear configured to interdigitate with the first driving gear such that rotation of the driven magnet causes, via the first and second driving gears, corresponding rotation of the pump driving gear and contrarotation of the pump driven gear in a manner by which liquid is pumped through the pump housing.