Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – From appliance
Reexamination Certificate
2011-01-11
2011-01-11
Faulk, Devona E (Department: 2614)
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
From appliance
C381S071100, C381S071110
Reexamination Certificate
active
07869607
ABSTRACT:
An Active Muffler in the form of a duct having two open ends for conveying air from a within a cabinet to outside the cabinet. A fan or blower is incorporated in the duct. An Automatic Noise Control (ANC) unit is associated with the duct, and at least one microphone and at least one speaker are incorporated in to the duct for noise-reduction. An outer portion of the duct may be sound-absorbing material. the ANC unit may cause noise to be shifted to a frequency that can be absorbed by the sound-absorbing material.
REFERENCES:
patent: 2091774 (1937-08-01), Weiland
patent: 4665549 (1987-05-01), Eriksson et al.
patent: 5377275 (1994-12-01), Suzuki
patent: 5511127 (1996-04-01), Warnaka
patent: 5606622 (1997-02-01), Christenson
patent: 6078671 (2000-06-01), Kawanishi et al.
patent: 6891347 (2005-05-01), Dobbs et al.
patent: 7017702 (2006-03-01), Gunby
patent: 7017707 (2006-03-01), Zia et al.
patent: 7161801 (2007-01-01), Chen et al.
patent: 7167363 (2007-01-01), Cushman et al.
patent: 7317801 (2008-01-01), Amir
patent: 7353908 (2008-04-01), French
patent: 2003/0107873 (2003-06-01), Van Gaal
patent: 2003/0123675 (2003-07-01), Culman et al.
patent: 2005/0170770 (2005-08-01), Johnson et al.
patent: 1 414 021 (2004-04-01), None
patent: WO 2005/027338 (2005-03-01), None
www.worksafe.wa.gov.au
ewsite/worksafe/default.html.
http:\\en.wikibooks.org/wiki/Acoustics/Noise—from—Cooling—Fans.
International Search Report for PCT/IL07/00269 dated Sep. 22, 2008.
Search Report and Written Opinion for PCT/IL07/00270 mailed on Sep. 16, 2008.
Barath Yossi
Itnati Itai Michael
Slapak Alon
Surov Micahel
Faulk Devona E
Paul Disler
Shiloh et al.
Silentium Ltd.
LandOfFree
Quiet active fan for servers chassis does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quiet active fan for servers chassis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quiet active fan for servers chassis will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2624154