{
  "$type": "site.standard.document",
  "description": "This rapid descent device (1) comprises a valve (20) having two chambers (22, 24), at least one friction band (10, 12) fixed on the pantograph bow frame, intended to come into contact with the catenary and equipped with a degradation detection circuit (11, 13), at least one fluid supply line (44)…",
  "path": "/patents/1422567",
  "publishedAt": "2022-12-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L5/16",
    "FAIVELEY TRANSP TOURS [FR]"
  ],
  "textContent": "This rapid descent device (1) comprises a valve (20) having two chambers (22, 24), at least one friction band (10, 12) fixed on the pantograph bow frame, intended to come into contact with the catenary and equipped with a degradation detection circuit (11, 13), at least one fluid supply line (44) to the main chamber of the valve, at least one supply line (30, 32) intended to supply this fluid to the pilot chamber of the valve, as well as at least one monitoring line (14) extending from the pilot chamber (22) of the valve, to supply a respective detection circuit (10, 12). According to the invention, this rapid descent device comprises means (40) for temporary shut-off of the fluid supply to the main chamber, which reliably ensures the initial raising of the pantograph until it comes into contact with the catenary.",
  "title": "QUICK DESCENT DEVICE FOR A PANTOGRAPH, PANTOGRAPH EQUIPPED WITH SAME, METHOD FOR IMPLEMENTING SAME AND METHOD FOR IMPROVING SUCH A PANTOGRAPH"
}