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:
Jul. 16, 2013
Filed:
Mar. 09, 2011
Yosuke Tanabe, Hitachinaka, JP;
Masanori Watanabe, Hitachinaka, JP;
Akira Goto, Isehara, JP;
Shigeyasu Tsubaki, Odawara, JP;
Masahiko Usui, Kawasaki, JP;
Akio Idei, Hadano, JP;
Yosuke Tanabe, Hitachinaka, JP;
Masanori Watanabe, Hitachinaka, JP;
Akira Goto, Isehara, JP;
Shigeyasu Tsubaki, Odawara, JP;
Masahiko Usui, Kawasaki, JP;
Akio Idei, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Silencing equipment provided with one or more flow channels through which cooling air flows has a flow channel forming member that forms the flow channel, and an acoustic absorbent member that is fixed to the flow channel forming member. A resonance type silencer is formed on a wall surface of the flow channel by providing a cavity for the resonance type silencer in the acoustic absorbent member and an aperture for the resonance type silencer in a portion of the flow channel forming member. The resonance type silencer sets a frequency of noise necessary to be reduced based on a peak frequency of noise generated by a fan. The silencing equipment further has a slide member which slides by a slide mechanism to adjust the area of the top of the aperture. The silencing equipment for electronic devices capable of cooling heat generating sections thereof with air has a small and simple structure and can improve a silencing effect by blowing air.