Sound insulating door
US8640427B2 · kind B2 · utility
2Cited by
21References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Apr 4, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B5/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door includes a first panel having a plurality of stiffeners thereon; a second panel facing the first panel, the second panel having a plurality of stiffeners thereon facing the stiffeners on the first panel; a first baffle between the first panel and the second panel, the first baffle having a plurality of openings of a first size; and a second baffle adjacent to the first baffle and between the first panel and the second panel, the second baffle having a plurality of openings of a second size different than the first size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.