Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural distributing means immediately upstream of runner
Reexamination Certificate
2009-04-28
2011-12-13
Nhu, David (Department: 2895)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Plural distributing means immediately upstream of runner
C415S220000, C415S223000, C417S361000, C417S423300, C417S423700
Reexamination Certificate
active
08075258
ABSTRACT:
A heat-dissipating fan housing includes a casing having a compartment with an impeller section, a stationary blade section, and an airflow concentration section arranged from an air inlet toward an air outlet spaced from the air inlet in an axial direction. A mounting portion is received in the compartment, and an impeller is rotatably coupled to the mounting portion for driving airflows. Stationary blades are interconnected between the casing and the mounting portion and are received in the stationary blade section. Each stationary blade includes a first edge facing the air inlet and a second edge facing the air outlet. The airflow concentration section is between the second edge of each stationary blade and the air outlet in the axial direction. The airflow concentration section concentrates the airflows after passing through the stationary blades. The noise is reduced, the wind pressure is increased, and less electricity is consumed.
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patent: I276743 (2007-03-01), None
Horng Alex
Li Ming-Tsung
Kamrath Alan
Kamrath & Associates PA
Nhu David
Sunonwealth Electric Machine Industry Co. Ltd.
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