{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "A steering system (10) comprises a hand wheel (12) positioned for manipulation by a driver, a steering shaft (16) extending from the hand wheel (12), and a magnetic column lock (50). The steering shaft (16) is supported by a steering column housing (14) so that it can rotate on its own axis. The…",
  "path": "/patents/1092751",
  "publishedAt": "2003-10-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R25/02147",
    "DELPHI TECH INC [US]"
  ],
  "textContent": "A steering system (10) comprises a hand wheel (12) positioned for manipulation by a driver, a steering shaft (16) extending from the hand wheel (12), and a magnetic column lock (50). The steering shaft (16) is supported by a steering column housing (14) so that it can rotate on its own axis. The magnetic column lock (50) includes a rotor (28) attached to steering shaft (16), a stator attached to column housing (14), and magnetorheological fluid (33) filling a space between the rotor (28) and stator (29). In another aspect of the steering system (10), the steering shaft (16) extends from the hand wheel (12) through a hand wheel actuator (20) having a position sensor (22) and a motor (24) for providing driver feedback. A steering column (34) extends from a lower portion (19) of said steering shaft (16) to a rack (34), and includes a pinion (32) at its lower end (19) for engagement with the rack (34), so that the rack (34) translates left and right when the pinion (32) is rotated in corresponding directions. The rack (34) is connected to the front road wheels (28) and causes the front road wheels (28) to steer when it is translated. An electronic controller (30) receives signals indicative of an angular position of the hand wheel (12) from the position sensor (22), and a road wheel actuator (40) connected to the steering rack (34) receives signals from the electronic controller (30) and repositions the steering rack (34) in response to the signals from said electronic controller (30). A magnetic clutch (26) having MR fluid (33) is provided for selectively engaging said steering shaft (16) to said steering column (14).",
  "title": "Steering system for vehicles"
}