{
  "$type": "site.standard.document",
  "description": "The piston has a piston ring packing (4) that is formed between a piston crown (101) and a piston skirt (102) at a lateral surface. The piston ring packing has a partial ring packing (400) with a piston ring (41) in a piston ring groove (411), where another piston ring (42) is provided. An…",
  "path": "/patents/993367",
  "publishedAt": "2013-01-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02F3/00",
    "WAERTSILAE NSD SCHWEIZ AG [CH]"
  ],
  "textContent": "The piston has a piston ring packing (4) that is formed between a piston crown (101) and a piston skirt (102) at a lateral surface. The piston ring packing has a partial ring packing (400) with a piston ring (41) in a piston ring groove (411), where another piston ring (42) is provided. An intermediate space is provided in the form of a recess (5,51) between the both piston rings. A pressure releasing unit (4000,4111) is provided in the form of a pressure relief groove. An independent claim is included for an oil distribution ring for a piston, which is provided with storage reservoir.",
  "title": "Piston, piston ring and oil distribution ring for a stroke piston combustion engine"
}