{
  "$type": "site.standard.document",
  "description": "A power transmission device includes a first one-way clutch (1) that transmits a rotational power of a pulley (3) to a rotating shaft (6), and a second one-way clutch (2) that transmits a rotational power of a rotor (11) of a motor (10) to the rotating shaft (6). The first one-way clutch (1) is of…",
  "path": "/patents/1084353",
  "publishedAt": "2004-09-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F16D41/066",
    "KOYO SEIKO CO [JP]"
  ],
  "textContent": "A power transmission device includes a first one-way clutch (1) that transmits a rotational power of a pulley (3) to a rotating shaft (6), and a second one-way clutch (2) that transmits a rotational power of a rotor (11) of a motor (10) to the rotating shaft (6). The first one-way clutch (1) is of inner cam type in which an engagement cam-surface is formed in an outer periphery of a first inner ring (7), while the second one-way clutch (2) is of outer cam type in which an engagement cam-surface is formed in an inner periphery of a second outer ring (14). This arrangement improves engagement performance of the first one-way clutch (1) as well as reducing heat generation of the second one-way clutch (2), so that the lifetime of grease is prolonged.",
  "title": "Power transmission device"
}