Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tamotsu Fujioka0
Masaaki Kawahashi0
Masayuki Saito0
Date of Patent
October 31, 2006
0Patent Application Number
108937730
Date Filed
July 16, 2004
0Patent Primary Examiner
Patent abstract
An acoustic fluid machine has an acoustic resonator and a piston reciprocated by an actuator at the base of the acoustic resonator. A valve device is provided on the upper end of the acoustic resonator. External air is introduced into the acoustic resonator through the valve device. The piston has through-holes, through which front space communicates with rear space thereby reducing load applied onto the piston.
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