Title:
音を回折させるための回折器
Document Type and Number:
Japanese Patent JP6668234
Kind Code:
B2
Abstract:
Diffractor for diffracting sound of traffic on a travel surface with at least one diffraction plate disposed laterally beside the travel surface. The diffraction plate is provided with a pattern of recesses in the upper surface thereof for the purpose of diffracting the traffic noise in a direction which differs from the lateral direction. Each of the recesses is divided into individual resonators by intermediate walls provided in the recesses. The recesses have acoustically substantially non-absorbing walls and are free of acoustically absorbing material. The intermediate walls between adjacent resonators have at least one throughflow opening along which the rainwater can flow from the one resonator to the other.
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Inventors:
Winant, Isbrand Hans
Application Number:
JP2016525315A
Publication Date:
March 18, 2020
Filing Date:
July 07, 2014
Export Citation:
Assignee:
4SILENCE B.V.
International Classes:
E01F8/00; E01B19/00; E01C1/00
Domestic Patent References:
| JP2013508584A | ||||
| JP53033241B2 | ||||
| JP2821900B2 | ||||
| JP3822641B2 | ||||
| JP61025159B2 |
Foreign References:
| DE19706708A1 |
Attorney, Agent or Firm:
Fukami patent office