Fan and impeller thereof

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Resilient bias or mount

Reexamination Certificate

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Details

C416S240000

Reexamination Certificate

active

08079816

ABSTRACT:
A fan includes an impeller and a fan frame. The impeller is accommodated within the fan frame. The impeller has a hub and a plurality of blades disposed around the hub. The hub has a top portion and a side wall connected with the top portion. The hub further has a plurality of flexible portions disposed and located on the side wall. The blades are connected with the flexible portions, respectively, so that the blades are connected to the hub.

REFERENCES:
patent: 2149267 (1939-03-01), Bouvy et al.
patent: 5152606 (1992-10-01), Borraccia et al.
patent: 6715989 (2004-04-01), Mosiewicz et al.
patent: 2056465 (1990-04-01), None
patent: 10307887 (2004-10-01), None
patent: 221563 (1994-03-01), None
patent: 200728608 (2007-08-01), None

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