Centrifugal fan

Details Centrifugal fan Centrifugal fan

2005-05-17

2005-05-17

Lopez, F. Daniel (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

C416S185000, C416S187000, C416S189000, C416S195000, C416S228000

Reexamination Certificate

active

06893220

ABSTRACT:
A centrifugal blower impeller includes a central hub and a plurality of impeller blades. The central hub includes a conical section and an outer edge. The conical section is centered with respect to a center axis and extends from the center axis towards the outer edge. The plurality of impeller blades includes first and second ends. The conical section is coupled to the first ends of the impeller blades which extend axially upward from the first ends towards the second ends. The centrifugal blower impeller also includes a rim which has a generally circular shape and is connected to the second ends of the impeller blades.

REFERENCES:
patent: 3272429 (1966-09-01), Wood
patent: 4363601 (1982-12-01), Leskinen
patent: 4647271 (1987-03-01), Nagai et al.
patent: 5927947 (1999-07-01), Botros
patent: 6224335 (2001-05-01), Parisi et al.
patent: 2001065495 (2001-03-01), None

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