Smoke exhauster having improved fan device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 20, 2005
Grant Date -
Feb 10, 2005
app pub date -
Aug 6, 2003
filing date -
Aug 6, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A smoke exhauster includes a motor attached to a housing, and a fan device attached to the motor and to be driven by the motor. The fan device including an upper plate, a lower plate having a bore, and a number of fan blades secured between the upper and the lower plates to form a chamber between the upper and the lower plates and to allow air to flow into the chamber of the fan device via the bore of the lower plate. Each of the fan blades includes a lower cut-off portion to allow the air to flow deeper into the chamber of the fan device before contacting with or scooped by the fan blades.
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Family
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