{
  "$type": "site.standard.document",
  "description": "The wall has a peripheral frame (4), and a metallic obstruction plate (5) fixed on a side (22) of the frame. A metallic obstruction plate (6) is fixed on an opposite side (23) of the frame (4), parallel to the plate (5). The frame is inserted between the two plates to accommodate free air volume…",
  "path": "/patents/1076117",
  "publishedAt": "2005-07-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R13/083",
    "GIAT IND SA [FR]"
  ],
  "textContent": "The wall has a peripheral frame (4), and a metallic obstruction plate (5) fixed on a side (22) of the frame. A metallic obstruction plate (6) is fixed on an opposite side (23) of the frame (4), parallel to the plate (5). The frame is inserted between the two plates to accommodate free air volume (7) between the plates to offer acoustic insulation to the wall. A partial vacuum is created in the volume between the plates.",
  "title": "Firewall"
}