{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A wheel (100) includes a boss (10), a rim (20), and a web (30). The rim (20) includes a tread (21) and a flange (22). A center (Cr) of the rim (20) in the axial direction of the wheel (100) is disposed closer to the flange (22) in the axial direction than a center (Cb) of the boss (10) in the axial…",
  "path": "/patents/1397434",
  "publishedAt": "2025-02-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B17/0006",
    "NIPPON STEEL CORP [JP]"
  ],
  "textContent": "A wheel (100) includes a boss (10), a rim (20), and a web (30). The rim (20) includes a tread (21) and a flange (22). A center (Cr) of the rim (20) in the axial direction of the wheel (100) is disposed closer to the flange (22) in the axial direction than a center (Cb) of the boss (10) in the axial direction is. The web (30) has a plate-thickness center line (A) that has a linear shape when the wheel (100) is viewed in its longitudinal section. When an angle that the plate-thickness center line (A) forms with the axial direction is denoted by α, a distance in the axial direction from a side face (24) of the rim (20) to an outer end (Aa) of the plate-thickness center line (A) is denoted by Pw, a length of the rim (20) in the axial direction is denoted by Wr, and Pw/Wr is denoted by L, the wheel (100) satisfies the expression L ≥ 0.0223α-1.363. Where, the angle α is 90° or less.",
  "title": "WHEEL FOR RAILWAY VEHICLE"
}