{
  "$type": "site.standard.document",
  "description": "A concrete mixer truck includes a chassis, an engine, a mixing drum supported on the chassis, a motor configured to rotate the mixing drum, a slump sensor configured to measure a pressure correlated with a slump of a mixture within the mixing drum, and a controller in communication with the engine…",
  "path": "/patents/1385265",
  "publishedAt": "2026-06-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B28C5/422",
    "Oshkosh Corporation"
  ],
  "textContent": "A concrete mixer truck includes a chassis, an engine, a mixing drum supported on the chassis, a motor configured to rotate the mixing drum, a slump sensor configured to measure a pressure correlated with a slump of a mixture within the mixing drum, and a controller in communication with the engine, the motor, and the slump sensor. The controller is configured to verify an interlock criteria is satisfied, receive an initiate command for a slump check procedure, in response to receiving the initiate command, command the motor to a slump check state, measure the pressure from the slump sensor for a predetermined amount of time, and average the pressure over the predetermined amount of time to produce a slump value.",
  "title": "CONCRETE MIXER VEHICLE WITH AUTONOMOUS SLUMP CHECK"
}