{
  "$type": "site.standard.document",
  "description": "A plunger pump includes: a pump body having a cylinder hole; a lid member configured to seal one end of the cylinder hole; a plunger which is slidably attached within the cylinder hole, one end of the plunger defining a pump chamber between the one end and the lid member and the other end of the…",
  "path": "/patents/1014130",
  "publishedAt": "2011-04-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T8/4031",
    "NISSIN KOGYO KK [JP]"
  ],
  "textContent": "A plunger pump includes: a pump body having a cylinder hole; a lid member configured to seal one end of the cylinder hole; a plunger which is slidably attached within the cylinder hole, one end of the plunger defining a pump chamber between the one end and the lid member and the other end of the plunger abutting against a driving member; and a coil spring which is disposed within the pump chamber and presses the plunger toward the driving member side, wherein: when the plunger reciprocally moves in an axial direction within the cylinder hole, fluid sucked into the pump chamber from a suction port is ejected from an ejection port of the pump chamber; and the lid member has a spherical shape and one end of the coil spring is received by a surface of the lid member.",
  "title": "Plunger pump"
}