Rotary kinetic fluid motors or pumps – Axially opposed working fluid paths to or from runner – Pump impeller means
Reexamination Certificate
2009-05-28
2011-12-06
Blum, David S (Department: 2813)
Rotary kinetic fluid motors or pumps
Axially opposed working fluid paths to or from runner
Pump impeller means
C415S187000, C415S208200, C415S219100, C062S263000, C062S426000
Reexamination Certificate
active
08070420
ABSTRACT:
An airflow-cooling apparatus of a ceiling air-conditioning circulation machine, and more particularly a structure permitting a smooth flow of the indoor air, wherein the drawn current of air passes through a cooling apparatus and then is guided indoors for reducing the temperature. A base frame includes a base frame having a rectangular positioning frame of the rim thereof. A plurality of radial supports are extended from the periphery of the positioning frame inwards. A circular frame is positioned at the center of the base frame. The rim of the circular frame is attached to the radial supports. A fan base is positioned within the circular hole of the circular frame and supported by a plurality of ribs. A plurality of conic and ring-shaped air outflow/inflow channels are concentrically and outwardly interposed between the circular frame and the positioning frame.
REFERENCES:
patent: 6736610 (2004-05-01), Cifarelli
patent: 2009/0314020 (2009-12-01), Yoshioka et al.
patent: 2010/0269537 (2010-10-01), Tadokoro et al.
Blum David S
Rosenberg , Klein & Lee
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