Title:
SOUND ABSORBING DISK AND UNDERWATER SOUND ABSORBING PLATE USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/091411
Kind Code:
A1
Abstract:
The present invention relates to a sound absorbing disk and comprises a housing, a viscous fluid, a plurality of ring members, a resilient member and a cover member. The housing has a hollow inside and has a lateral wall and a floor surface. The viscous fluid is accommodated inside the housing. The plurality of ring members are formed such that the central part can be passed through, and are positioned inside the housing, distanced from each other, along the direction of movement of the sound waves. The resilient member is disposed between the lateral wall of the housing and the ring members, has a lower modulus of elasticity than the modulus of elasticity of the viscous fluid, and contracts and expands by means of the viscous fluid moving between the ring members when the sound waves fall incident. The cover member is mounted on the front of the housing and tightly seals the inside of the housing from the outside.
Inventors:
LEE SAM HYEON (KR)
Application Number:
PCT/KR2019/014451
Publication Date:
May 07, 2020
Filing Date:
October 30, 2019
Export Citation:
Assignee:
CT ADVANCED META MAT (KR)
UNIV YONSEI IACF (KR)
UNIV YONSEI IACF (KR)
International Classes:
G10K11/168; B63G8/34; B63G13/02
Foreign References:
| JP2005301188A | 2005-10-27 | |||
| JPH06186983A | 1994-07-08 | |||
| KR20180028105A | 2018-03-16 | |||
| KR20070004908A | 2007-01-09 | |||
| US4450544A | 1984-05-22 |
Attorney, Agent or Firm:
KIM, Tae Wan (KR)
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