{
  "$type": "site.standard.document",
  "description": "The invention relates to an air suspension device for raising and lowering the vehicle body of air-suspended vehicles with level control, comprising at least one level control valve unit (1), air suspension bellows (2a, 2b) associated with at least one vehicle axle, which can be supplied from a…",
  "path": "/patents/954908",
  "publishedAt": "2015-12-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G17/0523",
    "KNORR BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH [DE]"
  ],
  "textContent": "The invention relates to an air suspension device for raising and lowering the vehicle body of air-suspended vehicles with level control, comprising at least one level control valve unit (1), air suspension bellows (2a, 2b) associated with at least one vehicle axle, which can be supplied from a reservoir air container (11) indirectly pneumatically connected thereto, as well as a control valve device (3) for manual level adjustment of the vehicle body in accordance with a manual control unit (8) bypassing the level control valve unit (1), comprising a manual actuation element (9) and a valve unit (15), wherein the control valve device (3) has at least one blocking valve (5a) for pressurizing and venting the air suspension bellows (2a, 2b) via the level control valve unit (1), at least one pressurizing valve (6a) and at least one venting valve (7a) for pressurizing and venting the air suspension bellows (2a, 2b) bypassing the level control valve unit (1). According to the invention, the valve unit (15) has a stationary element (18), a sliding element (19) sliding back and forth on the stationary element (18), and a guide element (20) arranged on the sliding element (19) for guidance, wherein over four positions of the manual actuation element (9), the at least one blocking valve (5a, 5b), the at least one pressurizing valve (6a, 6b) and the at least one venting valve (7a, 7b) are each pneumatically controlled via a pneumatic line (10a, 10b, 10c) connected thereto to initiate one of four operating states of the air suspension device.",
  "title": "PNEUMATIC SUSPENSION UNIT FOR LIFTING AND LOWERING A VEHICLE STRUCTURE"
}