Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2005-02-08
2005-02-08
Hsieh, Shih-Yung (Department: 2837)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S286000, C181S292000, C181S294000, C181S295000
Reexamination Certificate
active
06851515
ABSTRACT:
The invention concerns a sound-proofing panel, in particular a rotorcraft structural or lining panel: the sound-proofing panel (1) comprises at least two opposite plates (2, 3, 5, 6) forming between them a closed internal space (4), and an aggregate (7) including at least solid elements (8) in contact and which fills entirely said internal space (4).
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patent: 5225622 (1993-07-01), Gettle et al.
patent: 5777947 (1998-07-01), Ahuja
patent: 5912442 (1999-06-01), Nye et al.
patent: 6085865 (2000-07-01), Delverdier et al.
patent: 4438813 (1996-05-01), None
patent: 2649356 (1991-01-01), None
Delverdier Osmin
Dussac Marc Francis Vincent
Vie Philippe
Ateca
Eurocopter
Hsieh Shih-Yung
Stevens Davis Miller & Mosher LLP
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