Patent ID: 8701314
Filing Date: 2014-04-22
Classification: E02F

Abstract:
1. An apparatus comprising a body having a fluid flow path defined between a fluid inlet and a fluid outlet and thrust means mounted within the fluid flow path to direct, in use, a flow of fluid, along the fluid flow path; wherein at least a portion of the fluid flow path comprises a duct and wherein the thrust means comprises a propeller mounted within the duct; characterised in that the apparatus further comprises a plate spaced from the fluid inlet defining a space therebetween; wherein a plurality of elongate pivotable vanes are positioned in a generally circular orientation in the aforesaid space, about an axis of the flow path and with a pivot axis of each vane being aligned with the axis of the flow path; wherein the thrust means is adapted to rotate in a direction opposite to a direction of a flow of fluid through the plurality of vanes into the space.