{
  "$type": "site.standard.document",
  "description": "An intermediate drive assembly (1) is provided for a fuel pump (10) having a pump housing (12) provided with at least one bore (20a, 20b, 20c) for receiving the intermediate drive assembly (1) and a pumping plunger (30) which are driven, in use, in a reciprocal manner within the bore (20a, 20b…",
  "path": "/patents/1005639",
  "publishedAt": "2012-02-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M59/102",
    "DELPHI TECH HOLDING SARL [LU]"
  ],
  "textContent": "An intermediate drive assembly (1) is provided for a fuel pump (10) having a pump housing (12) provided with at least one bore (20a, 20b, 20c) for receiving the intermediate drive assembly (1) and a pumping plunger (30) which are driven, in use, in a reciprocal manner within the bore (20a, 20b, 20c) by a drive arrangement (2) so as to pressurise fuel within a pump chamber (32). The intermediate drive assembly (1) is arranged so as to cooperate between the drive arrangement (2) and the pumping plunger and comprises a tappet (34) having a base portion (38) and a side wall portion (36), and a coupling mechanism, in use for coupling the pumping plunger (30) to the base portion (38). The coupling mechanism comprises a spring seat (40) adapted to engage an end of the pumping plunger (30), and interlocking means, in use for substantially preventing relative rotation between the base portion (38) and the spring seat (40). The base portion (38) has a drive surface (5) for cooperating with the drive arrangement (2), a thrust surface (7) for cooperating with and imparting drive to the pumping plunger (30), and a recess (9), the recess (9) receiving an insert (11) formed of a material having a hardness greater than the base portion (38). The insert (11) is a clearance fit in the recess (9).",
  "title": "Intermediate drive assembly"
}