{
  "$type": "site.standard.document",
  "description": "A sprocket support body comprises an external spline configured to be engaged with an internal spline of a bicycle sprocket arrangement. The external spline includes a plurality of external-spline driving surfaces configured to transmit a rotational driving force between the sprocket support body…",
  "path": "/patents/1272393",
  "publishedAt": "2020-09-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B27/0026",
    "SHIMANO INC."
  ],
  "textContent": "A sprocket support body comprises an external spline configured to be engaged with an internal spline of a bicycle sprocket arrangement. The external spline includes a plurality of external-spline driving surfaces configured to transmit a rotational driving force between the sprocket support body and the bicycle sprocket arrangement in a circumferential direction. The plurality of external-spline driving surfaces includes at least four first external-spline driving surfaces and at least one second external-spline driving surface. The at least four first external-spline driving surfaces are respectively arranged on at least four of nine first external-spline driving positions equally arranged in the circumferential direction about a rotational center axis at a first external-spline pitch angle which is equal to 40 degrees. The at least one second external-spline driving surface is offset from the nine first external-spline driving positions in the circumferential direction about the rotational center axis.",
  "title": "SPROCKET SUPPORT BODY AND BICYCLE HUB ASSEMBLY"
}