Patent ID: 11925755
Assignee: LOEWENSTEIN MEDICAL TECHNOLOGY S.A.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC A  F | IPC A  F

Claim 10:
11. A rotatable fan impeller for a respiration therapy appliance, wherein the impeller comprises a central hub with a support disk which extends substantially in a radial direction starting from the hub, the support disk having an outer radius which defines a circumference, a plurality of blade elements which are arranged with their base on the support disk and starting from the hub extend substantially in a radial direction to their blade tip and starting from the base on the support disk extend in an axial direction and there define a longitudinal side, the blade elements having at least one outer radius at the blade tips, and wherein each blade element of the plurality of blade elements comprises a cutout which is arranged at the blade tip in such a way that the blade tip exhibits a single bevel in the axial direction, with an outer radius at the base of the blade element being smaller than an outer radius at the longitudinal side of the blade element, and wherein a single through-hole is formed as cutout in the support disk between at least some adjacent blade elements of the plurality of blade elements.