The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2009
Filed:
Oct. 19, 2007
Masaaki Kawahashi, Saitama, JP;
Tamotsu Fujioka, Yokohama, JP;
Mohammed Anwar Hossain, Yokohama, JP;
Masayuki Saito, Cincinnati, OH (US);
Masaaki Kawahashi, Saitama, JP;
Tamotsu Fujioka, Yokohama, JP;
Mohammed Anwar Hossain, Yokohama, JP;
Masayuki Saito, Cincinnati, OH (US);
Anest Iwata Corporation, Yokohama-shi, JP;
Abstract
In an acoustic resonator, an actuator allows a piston to reciprocate axially at very small amplitude at high speed. Owing to pressure fluctuation in the acoustic resonator involved by reciprocal motion of the piston, fluid is sucked into and discharged from the acoustic resonator via a valve device at the top end of the acoustic resonator. The acoustic resonator is covered with a gas guide with a space. The valve device is cooled by a fan at the top end of the gas guide.