High performance acoustic door
US11851942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2021 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Mar 9, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/7042
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An acoustic door assembly having 1¾″ thickness, a sound transmission class (STC) rating greater than 50, UL10C 20-minute fire rating, and constructed without sheet metal or lead. In an embodiment, the door assembly includes a frame housing a decoupled internal core sandwiched between two mass-loaded vinyl outer faces. The internal core includes a multi-layering of low-density layers for absorbing high-frequency noise, damping layers of mass-loaded vinyl for absorbing low-frequency noise, and a flame-retardant layer. The outer faces are a multi-layered assembly coupled to a frame of the door assembly and in contact communication to the internal core, the outer faces having layers of mass-loaded vinyl, plywood, high-density fiberboard, and a veneer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.