Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Gaku Kamitani0
Atsuhiko Hirata0
Date of Patent
July 5, 2011
Patent Application Number
12476332
Date Filed
June 2, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A blower body is provided with a first wall and a second wall, and openings are provided in the walls at positions facing the approximate center of a diaphragm. An inflow passage that allows the openings to communicate with the outside is arranged between the two walls. When the diaphragm is vibrated in response to a voltage applied to a piezoelectric element, the first wall vibrates near the opening and sucks in air from the inflow passage so that the air can be ejected from the opening. A plurality of branch passages which provide sound absorption are connected to an intermediate section of the inflow passage so as to prevent noise generated near the opening from leaking from an inlet.
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