{
  "$type": "site.standard.document",
  "description": "In a fuel pump having a high pump efficiency, an annular portion (54) is formed on an outer periphery of an impeller (40) to let one- and opposite-side blade grooves (50) be independent of each other. Then, various improvements are made such as tilting front and rear wall surfaces (47a, 46a) of the…",
  "path": "/patents/1098172",
  "publishedAt": "2003-02-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M37/048",
    "DENSO CORP [JP]"
  ],
  "textContent": "In a fuel pump having a high pump efficiency, an annular portion (54) is formed on an outer periphery of an impeller (40) to let one- and opposite-side blade grooves (50) be independent of each other. Then, various improvements are made such as tilting front and rear wall surfaces (47a, 46a) of the blade grooves in a predetermined direction, forming one- and opposite-side blade grooves (166, 171) in a zigzag fashion, forming a guide surface (92a) in a communicating passage (84) of a pump housing (81), and forming communicating holes (176) in an impeller (160).",
  "title": "Impeller and turbine type fuel pump"
}