COMPOSITE SOUND-ABSORBING DEVICE WITH BUILT IN RESONANT CAVITY

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20120247867A1
SERIAL NO

13515148

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The composite sound-absorbing device of the present invention includes a perforated board having a number of first pores thereon, a back board and side boards, the perforated board, back board and side boards forming a closed cavity, wherein: at least one or more of the resonant cavities being located within the closed cavity; at least one or more of second pores being located on the resonant cavities; at least one of the second pores being connected with the closed cavity; the resonant cavity having a volume of V=10 mm3 −1×1010 mm3, having a thickness of 0.05 mm-10 mm, the second pores having an aperture of d′=0.05-100 mm, with a perforation rate σ′=0.01%-30%. The present invention is beneficial to improve the effect of sound-absorbing and expand the frequency band of sound-absorbing.

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Patent Owner(s)

Patent OwnerAddress
INSTITUTE OF ACOUSTICS CHINESE ACADEMY OF SCIENCES100190 NO 21 WEST FOURTH RING ROAD BEIJING HAIDIAN DISTRICT MUNICIPAL DISTRICT BEIJING CITY 100190

International Classification(s)

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  • 2010 Application Filing Year
  • E04B Class
  • 875 Applications Filed
  • 495 Patents Issued To-Date
  • 56.58 % Issued To-Date

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yang, Jun Beijing, CN 792 8454

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Patent Citation Ranking

  • 19 Citation Count
  • E04B Class
  • 65.08 % this patent is cited more than
  • 13 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1327494428611201 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 70100 +020406080100120140160180200220240260280300

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