AXIAL-FLOW PUMP Russian patent published in 2015 - IPC F04D15/00 F04D29/02 F04D29/24 F04D29/40 

FIELD: engines and pumps.

SUBSTANCE: claimed pump comprises lateral intake pipe for fluid feed, shaft arranged inside the manifold to run in bearings and impeller fitted on the shaft. Said manifold is isolated from the bearing assembly by packing gland and connected with lateral inlet via inlet sleeve. Sleeve with outlet is fitted at the manifold outlet. Both sleeves are made of material that features shape memory effect. Blades composed of bimetal flat two-layer elements are secured at the wheel. One said layer is made of material with shape memory effect, another layer being made of material that features expansivity smaller than that of material with shape memory effect.

EFFECT: higher discharge pressure, longer life of bearings, simplified design.

3 dwg