{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "An air maintenance system comprising a rotatable radially inner ring (11) associated with a vehicle wheel or fixed to a vehicle rim (9); a stationary radially outer ring (13) maintaining a constant angular position, the stationary outer ring (13) including ring segments (15) secured together by a…",
  "path": "/patents/925278",
  "publishedAt": "2017-06-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C23/004",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "An air maintenance system comprising a rotatable radially inner ring (11) associated with a vehicle wheel or fixed to a vehicle rim (9); a stationary radially outer ring (13) maintaining a constant angular position, the stationary outer ring (13) including ring segments (15) secured together by a plurality of connecting shafts (53); an occlusion roller (50) rotationally fixed to the stationary outer ring (13) by a first connecting shaft of the plurality of connecting shafts (53), the occlusion roller (50) having a protruding portion (51) preferably centered axially at a radially outer surface of the occlusion roller (50) with axially outer portions of the occlusion roller (50) being radially recessed from the protruding portion (51) and supported by bearing surfaces (12) of the rotatable inner ring (11); spacer rollers (70) rotationally fixed to the stationary radially outer ring (13) by second and third connecting shafts of the plurality of connecting shafts (53) and rotationally supported by the bearing surfaces (12); and a flexible tube (20) defining a pump cavity, the air maintenance system (10) being is configured for pumping a fluid from the ambient environment into a pneumatic tire by applying an occluding force against the flexible tube (20) thereby periodically occluding portions of the pump cavity. The spacer rollers (70) have axially outer surfaces for rotational support by bearing surfaces (12) of the rotatably inner ring (12) and a recess (72) preferably centered axially at the outer surface of the spacer rollers (70) for avoiding any contact between the spacer rollers (70) and the flexible tube (20).",
  "title": "ON-WHEEL AIR MAINTENANCE SYSTEM"
}