{
  "$type": "site.standard.document",
  "description": "The vehicle has a hydraulic brake system, and a pneumatic brake system for a trailer coupled with the vehicle. A pneumatic coupling head (1) transfers pressurized air between the vehicle and the trailer. A valve (13) is integrated into the coupling head and inserted between a coupling head line (5)…",
  "path": "/patents/984404",
  "publishedAt": "2013-08-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T13/263",
    "HALDEX BRAKE PROD GMBH [DE]"
  ],
  "textContent": "The vehicle has a hydraulic brake system, and a pneumatic brake system for a trailer coupled with the vehicle. A pneumatic coupling head (1) transfers pressurized air between the vehicle and the trailer. A valve (13) is integrated into the coupling head and inserted between a coupling head line (5) and a branch line (7). The valve is automatically transferred to an opening position during coupling of a counter-coupling head with the vehicle, where the coupling head line is pneumatically connected with the branch line in the opening position. A sensor detects pressure in the branch line. The sensor is designed as a path sensor or pressure sensor.",
  "title": "Agricultural tractor"
}