{
  "$type": "site.standard.document",
  "description": "Heating circuit for a motor vehicle comprises a heat source and a heat exchanger that are connected to each other via a coolant feed line (3) to feed hot coolant from the heat source to the heat exchanger and via a coolant return line (4) to feed the coolant from the heat exchanger to the heat…",
  "path": "/patents/1078549",
  "publishedAt": "2005-04-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60H1/00571",
    "BEHR GMBH & CO KG [DE]"
  ],
  "textContent": "Heating circuit for a motor vehicle comprises a heat source and a heat exchanger that are connected to each other via a coolant feed line (3) to feed hot coolant from the heat source to the heat exchanger and via a coolant return line (4) to feed the coolant from the heat exchanger to the heat source. The feed line and the return line in some sections run through one of two concentric partial tubes (6, 7) of a common tube (5). The outer partial tube has ribs (8) on its inner surface or the inner partial tube has ribs on its outer surface. Preferred Features: The ribs extend in a radial direction and run in the longitudinal direction of the partial tube. The partial tube provided with the ribs is an extruded profile.",
  "title": "Heating circuit for a motor vehicle"
}