Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2011-08-30
2011-08-30
Martin, Edgardo San (Department: 2832)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S295000
Reexamination Certificate
active
08006802
ABSTRACT:
In a hollow member, a portion of a hollow region adjoining and communicating with an opening portion is constructed as an intermediate layer. The intermediate layer is constructed in such a manner that, when a reflective surface radiates reflected waves corresponding to incident sound waves falling from an external space on the opening portion and the reflective surface of the hollow member, a phase, in the opening portion, of reflected waves produced by resonance of the resonator in response to the incident waves differs from a phase of reflected waves on the reflective surface, and that the absolute value of a value obtained by dividing a specific acoustic impedance of the opening portion by a characteristic impedance of a medium of the opening portion is less than one. A sound absorbing effect through resonance-based action in the opening portion and a sound scattering effect through a flow of gas molecules.
REFERENCES:
patent: 3275101 (1966-09-01), Davis, Jr et al.
patent: 4076100 (1978-02-01), Davis
patent: 4189027 (1980-02-01), Dean et al.
patent: 4231447 (1980-11-01), Chapman
patent: 4821839 (1989-04-01), D'Antonio et al.
patent: 4821841 (1989-04-01), Woodward et al.
patent: 5457291 (1995-10-01), Richardson
patent: 5512715 (1996-04-01), Takewa et al.
patent: 5598669 (1997-02-01), Hamdi et al.
patent: 5959265 (1999-09-01), Van Ligten
patent: 6021612 (2000-02-01), Dunn et al.
patent: 6167985 (2001-01-01), Van Ligten
patent: 6290022 (2001-09-01), Wolf et al.
patent: 6435303 (2002-08-01), Warnaka
patent: 6892856 (2005-05-01), Takahashi et al.
patent: 7314114 (2008-01-01), Gardner et al.
patent: 2002/0017426 (2002-02-01), Takahashi et al.
patent: 2003/0006090 (2003-01-01), Reed
patent: 2005/0098379 (2005-05-01), Sato et al.
patent: 2008/0308061 (2008-12-01), Yokota
patent: 06026130 (1994-02-01), None
patent: 07-302087 (1995-11-01), None
patent: 2002-030744 (2002-01-01), None
patent: 2003-097037 (2003-04-01), None
patent: WO 96/23294 (1996-08-01), None
European Patent Office “Extended Search Report” dated Apr. 5, 2011, Application No. 09011270.7, 7 pages.
Martin Edgardo San
Pillsbury Winthrop Shaw & Pittman LLP
Yamaha Corporation
LandOfFree
Acoustic structure and acoustic room does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic structure and acoustic room, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic structure and acoustic room will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2745691