Patent ID: 8292577
Filing Date: 2012-10-23
Classification: F04D

Abstract:
1. A removable impeller designed to be incorporated into a fan, comprising: a wheel furnished with a plurality of blades and fitted with locking means to allow the wheel to be removably attached to a hub, and protruding transmission means positioned close to a central neck including an axis of revolution that is parallel to that of the wheel, and designed so as to alternately allow engagement or extraction of the locking means, wherein the locking means are arranged in the central neck in the form of a first series of locking clips evenly spaced from one another and each provided at a bottom with a radial swelling oriented outward, and wherein the transmission means are arranged in the central neck in the form of a second series of transmission clips evenly spaced from one another and interspersed with the locking clips, each transmission clip being fitted with a first stop and a second stop positioned one beneath the other and oriented inward, said first stop forming a more pronounced protrusion than the second stop.