Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing with axial flow runner
Reexamination Certificate
2006-01-03
2006-01-03
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing with axial flow runner
C416S228000, C416S22300B
Reexamination Certificate
active
06981843
ABSTRACT:
An improved axial-flow fan structure is disclosed and claimed, which includes a hub and a plurality of blades. The hub has a top surface and a side surface around which the plurality of blades is mounted. A lateral air intake region is formed above the top surface of the hub and surrounded by edge portions of all of the blades. A lateral air intake surface around the lateral air intake region is constituted by the edge portions of all of the blades. A part of each of the edge portions is fastened to the side surface of the hub.
REFERENCES:
patent: 2284141 (1942-05-01), Funk
patent: 2888188 (1959-05-01), Hersh
patent: 3274410 (1966-09-01), Boivie
patent: 5814908 (1998-09-01), Muszynski
Chang Shun-chen
Chiu Yung-yu
Lin Kuo-cheng
David Pai Chao-Chang
Delta Electronics , Inc.
Nguyen Ninh H.
Pai Patent & Trademark Law Firm
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