{
  "$type": "site.standard.document",
  "description": "A lumbar support (1) for a vehicle backrest is provided with a rest member (12) having a front surface shaped to support an area (5) of a user's back. Behind the rest member (12) an elastic member (15) is provided, which has a middle portion (19) fixed to the rest member (12) and two opposing ends…",
  "path": "/patents/995377",
  "publishedAt": "2012-12-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60N2/42727",
    "FIAT RICERCHE [IT]"
  ],
  "textContent": "A lumbar support (1) for a vehicle backrest is provided with a rest member (12) having a front surface shaped to support an area (5) of a user's back. Behind the rest member (12) an elastic member (15) is provided, which has a middle portion (19) fixed to the rest member (12) and two opposing ends (17), which are designed to be connected to a backrest frame, the elastic member (15) being designed to maintain the rest member (12) in a rest position and to deform in response to a thrust of the user's back to backwardly release the rest member (12) between the rest position and a first position (D1) under normal use conditions, and then abruptly towards a second position (D2) when a thrust of a user's back exceeds a given force value (F1). The characteristic force/displacement curve of the elastic member (15) has a slope between zero and a given threshold (V) in the section between the first and the second positions (D1, D2), and the threshold (V) being equal to 0.5 [N/mm].",
  "title": "Lumbar support for a vehicle backrest"
}