{
  "$type": "site.standard.document",
  "description": "A hydraulic circuit controls a doubling acting cylinder of a vehicle suspension to provide load leveling and shock absorption functions. A set of solenoid valves control the application of pressurized hydraulic fluid from a supply line to the cylinder and from the cylinder to a tank return line to…",
  "path": "/patents/1105947",
  "publishedAt": "2002-03-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G11/26",
    "HUSCO INT INC [US]"
  ],
  "textContent": "A hydraulic circuit controls a doubling acting cylinder of a vehicle suspension to provide load leveling and shock absorption functions. A set of solenoid valves control the application of pressurized hydraulic fluid from a supply line to the cylinder and from the cylinder to a tank return line to raise and lower the vehicle for load leveling. The chambers of the cylinder are interconnected by a parallel arrangement (72,217) of a check valve (78,220), orifice (76,218) and a relief valve (74,222). Another parallel arrangement (58) of a check valve (64), orifice (62) and a relief valve (60) couples the cylinder to an accumulator (56). These parallel arranged components enable the doubling acting cylinder to function as a passive shock absorber. A lock-out valve (68) is provided in the preferred embodiment a to defeat the shock absorber operation and provide a very stiff suspension.",
  "title": "Regenerative suspension for an off-road vehicle"
}