{
  "$type": "site.standard.document",
  "description": "A flapper door (28) is spring biased closed against a valve seat on the underside of a filler tube bulkhead (14) having a refueling nozzle aperture (16). The valve seat has an annular tapered surface (20) and a resilient annular seal (34) on the flapper door (28) contacts the valve seat in wiping…",
  "path": "/patents/1073956",
  "publishedAt": "2005-09-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K15/04",
    "EATON CORP [US]"
  ],
  "textContent": "A flapper door (28) is spring biased closed against a valve seat on the underside of a filler tube bulkhead (14) having a refueling nozzle aperture (16). The valve seat has an annular tapered surface (20) and a resilient annular seal (34) on the flapper door (28) contacts the valve seat in wiping engagement. A pneumatic dampener (42) retards the speed of closure of the flapper door (28) onto the valve seat.",
  "title": "Method and arrangement for sealing a capless fuel tank filler tube"
}