{
  "$type": "site.standard.document",
  "description": "A planetary gear device (10) comprises planetary shafts (20), a planetary gear (24) supported on the planetary shafts (20) via bearings (22), and an internally-toothed gear (28A). The planetary shafts (20) are arranged at positions offset from a shaft center of the internally-toothed gear (28A)…",
  "path": "/patents/974329",
  "publishedAt": "2014-05-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K17/046",
    "SUMITOMO HEAVY INDUSTRIES [JP]"
  ],
  "textContent": "A planetary gear device (10) comprises planetary shafts (20), a planetary gear (24) supported on the planetary shafts (20) via bearings (22), and an internally-toothed gear (28A). The planetary shafts (20) are arranged at positions offset from a shaft center of the internally-toothed gear (28A). Orbital motion of the planetary shafts (20) is restricted so as to retrieve rotation output from a casing (30) integrated with the internally-toothed gear (28A). Lubricant in which the bearings around some of the plurality of planetary shafts (20) are immersed is sealed in the casing (30). The planetary gear device (10) further comprises a retention part (28C, 29A) for retaining the lubricant on a part integrally rotated with the casing (30).",
  "title": "Planetary gear device"
}