Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John Hugh Dennis0
Date of Patent
June 26, 2007
0Patent Application Number
104764610
Date Filed
April 22, 2002
0Patent Primary Examiner
Patent abstract
A battery (16) drives an electric motor (17) which in turn drives a fan (18). A circuit board (20) controls the operation of the motor and fan to maintain the flow rate. Air is drawn through an inlet (22) and out through a vent (24). Foam discs (32) and (34) may extract particles from the air and an electrostatic filter may attract aerosols in the air.
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