{
  "$type": "site.standard.document",
  "description": "The coupling has a retaining unit engaged at an end (42) of a ball neck (40) and fixed at a motor vehicle, and a coupling ball (46) arranged at another end of the ball neck. A magnet (80) e.g. button magnet, is arranged in a recess of the coupling ball. The magnet is aligned such that magnetic flux…",
  "path": "/patents/1013290",
  "publishedAt": "2011-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60D1/06",
    "SCAMBIA IND DEV AG [LI]"
  ],
  "textContent": "The coupling has a retaining unit engaged at an end (42) of a ball neck (40) and fixed at a motor vehicle, and a coupling ball (46) arranged at another end of the ball neck. A magnet (80) e.g. button magnet, is arranged in a recess of the coupling ball. The magnet is aligned such that magnetic flux magnetomotive force of the ball neck is carried out. A magnetic field sensor (130) is arranged at the ball neck for detecting the magnetic flux magnetomotive force of the ball neck, where the magnetic field sensor is connected to a trailer detection circuit (154).",
  "title": "Tow bar"
}