Reversible fan

Details Reversible fan Reversible fan

F - Mech Eng,Light,Heat,Weapons

04

D

230/6

F04D 29/36 (2006.01)

Patent

CA 1074748

ABSTRACT A fan, with reversible blades, having a hub receiving the stem of the blades and an inner retaining ring, which has outwardly extending projections, supported concentric with the hub. A helical spring is received in, and actually extends into, a blind hole in each stem, and the inner end of the spring rests on the retaining ring at the projection urging the blades outward.

291823

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