{
  "$type": "site.standard.document",
  "description": "A hydraulic pressure control device is provided in which a proportional pressure control valve (20) is actuated by operating the brake pedal (11) to adjust the hydraulic pressure supplied from a pressure source to the wheel brakes to a value corresponding to the pedal operating amount. Also, a…",
  "path": "/patents/1102932",
  "publishedAt": "2002-07-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T13/14",
    "SUMITOMO SEI BRAKE SYS INC [JP]"
  ],
  "textContent": "A hydraulic pressure control device is provided in which a proportional pressure control valve (20) is actuated by operating the brake pedal (11) to adjust the hydraulic pressure supplied from a pressure source to the wheel brakes to a value corresponding to the pedal operating amount. Also, a brake device for a vehicle using it is provided. The proportional pressure control valve (20) is integrated with a hydraulic pressure generator to transmit the input from the brake pedal (11) to a spool valve (22) in the control valve through a first piston (31), first spring (32), second piston (33) and second spring (34) of the hydraulic pressure generator. If the pressure source or the wheel brakes in a first line fail, after the second piston (33) has made a full stroke, brake fluid in a fluid chamber is pressurized, so that the hydraulic pressure generated is supplied to wheel brakes in a second line through a copy valve (8) which is open.",
  "title": "Hydraulic pressure control device and vehicle brake device comprising the same"
}