{
  "$type": "site.standard.document",
  "description": "The device for blocking wheels on a turntable of tyre-changing machines comprises a hollow shaft (13) to a top of which is constrained a turntable (11) having a central opening in which a blocking pin (14) slides, which pin is provided with a truncoconical stopper (21) which engages superiorly with…",
  "path": "/patents/1071267",
  "publishedAt": "2006-01-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C25/0545",
    "SNAP ON EQUIPMENT SRL [IT]"
  ],
  "textContent": "The device for blocking wheels on a turntable of tyre-changing machines comprises a hollow shaft (13) to a top of which is constrained a turntable (11) having a central opening in which a blocking pin (14) slides, which pin is provided with a truncoconical stopper (21) which engages superiorly with a central hole of the wheel rim (12). The pin is displaced and held in rim-blocking position by a pneumatic single-acting cylinder (22) and by means (28,29) for automatically constraining the pin to the cylinder. The blocking of the rim (12) is completed by a hinge mechanism for preventing rotation of the rim in relation to the table.",
  "title": "A self-centring blocking device for wheels on turntables of tyre-changing machines"
}