Soundproofing structure, partition structure, window member, and cage
US10269339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2018 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Aug 31, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Provided is a soundproofing structure including: a plate-like member which has a plurality of through-holes passing therethrough in a thickness direction, in which in a case where an average opening diameter of the through-holes is 0.1 μm or greater and less than 100 μm, and in a case where the average opening diameter of the through-holes is set as phi (μm) and a thickness of the plate-like member is set as t (μm), an average opening ratio rho of the through-holes is greater than 0 and less than 1 and falls in a range where a center is rho_center=(2+0.25×t)×phi−1.6, a lower limit is rho_center−(0.052×(phi/30)−2), and an upper limit is rho_center+(0.795×(phi/30)−2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.