{
  "$type": "site.standard.document",
  "description": "An excavator (100) includes an excavation attachment including a boom (4), an arm (5), and a bucket (6), a left main pump (14L) and a right main pump (14R) mounted on an upper rotating body (3), a control valve (170) serving as a confluence valve that merges an operating oil discharged from the…",
  "path": "/patents/1389026",
  "publishedAt": "2025-11-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "E02F9/2221",
    "SUMITOMO CONSTRUCTION MACHINERY CO LTD [JP]"
  ],
  "textContent": "An excavator (100) includes an excavation attachment including a boom (4), an arm (5), and a bucket (6), a left main pump (14L) and a right main pump (14R) mounted on an upper rotating body (3), a control valve (170) serving as a confluence valve that merges an operating oil discharged from the left main pump (14L) and the operating oil discharged from the right main pump (14R) with each other, and a controller (30) that can control functioning of the control valve (170). The controller (30) moves the control valve (170) to merge the operating oil discharged from the left main pump (14L) and the operating oil discharged from the right main pump (14R) with each other while the boom (4), the arm (5), and the bucket (6) are moving simultaneously.",
  "title": "SHOVEL"
}