Noise suppression systems
US10557402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2018 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/665
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus or system includes a component that generates or transfers noise having a frequency within a noise frequency range. The component may include a boundary. The apparatus or system may be an engine in some examples. The engine may additionally include a micro-perforated sheet positioned a distance from the boundary. The micro-perforated sheet may include a plurality of micro-perforated holes, and may be configured to absorb sound within an absorption frequency range based on parameters of the micro-perforated sheet. The parameters may include the distance from the boundary and dimensions of the micro-perforated holes, and may be set such that the absorption frequency range overlaps the noise frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.