Patent ID: 8282365
Filing Date: 2012-10-09
Classification: F04C,H02K

Abstract:
1. A pump for pumping fluid, comprising: a pump housing having a first end and a second end; a fluid inlet opening in the first end and a fluid outlet opening in the second end; an unobstructed conduit extending through the pump housing from the fluid inlet opening to the fluid outlet opening; a first fluid displacer that is separate from the unobstructed conduit and positioned externally of the unobstructed conduit and having a plurality of portions which are arranged to act on fluid; an inlet channel for introducing fluid from the unobstructed conduit to the first fluid displacer to be pumped by the plurality of portions; and an outlet channel separate from the unobstructed conduit for carrying pumped fluid from the first fluid displacer to outside the pump without the fluid re-entering the unobstructed conduit; wherein the unobstructed conduit is in fluid communication with the fluid inlet opening and the fluid outlet opening; and wherein the unobstructed conduit extends past the first fluid displacer.