{
  "$type": "site.standard.document",
  "description": "A transfer case including a hydraulically actuated torque-coupling device is provided for selectively actuating a secondary drive axle of an All-Wheel Drive motor vehicle when wheel slippage occurs with a primary axle. The transfer case comprises a housing, an input shaft and an output shaft both…",
  "path": "/patents/1066668",
  "publishedAt": "2006-06-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K17/344",
    "DANA CORP [US]"
  ],
  "textContent": "A transfer case including a hydraulically actuated torque-coupling device is provided for selectively actuating a secondary drive axle of an All-Wheel Drive motor vehicle when wheel slippage occurs with a primary axle. The transfer case comprises a housing, an input shaft and an output shaft both rotatably supported within the housing, and the torque-coupling device. The torque-coupling device comprises a hollow casing, a selectively engageable friction clutch assembly for operatively coupling the input shaft to the output shaft, and a hydraulic clutch actuator. The hydraulic actuator includes a hydraulic pump located within the casing and adapted to generate a hydraulic pressure to frictionally load the friction clutch assembly, and a variable pressure relief valve assembly fluidly communicating with the hydraulic pump to selectively control the hydraulic pressure generated by the pump.",
  "title": "Transfer case with variably controlled torque coupling device"
}