{
  "$type": "site.standard.document",
  "description": "The device has a hydraulic type actuation device (10) with check valves (18) interposed between a piston (14) and a cylinder (12). The valves selectively control communication of a front pressure chamber (16) with a pressurized hydraulic fluid supplying port (20) to establish a hydraulic actuation…",
  "path": "/patents/1070928",
  "publishedAt": "2006-01-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T13/588",
    "BOSCH GMBH ROBERT [DE]"
  ],
  "textContent": "The device has a hydraulic type actuation device (10) with check valves (18) interposed between a piston (14) and a cylinder (12). The valves selectively control communication of a front pressure chamber (16) with a pressurized hydraulic fluid supplying port (20) to establish a hydraulic actuation pressure in the chamber. The valves are controlled by an axial movement of the piston as per a driving stroke before its actuation stroke. An independent claim is also included for a method to control a parking brake device.",
  "title": "Hydraulic actuation device of a parking brake and method of controlling such a device"
}