{
  "$type": "site.standard.document",
  "description": "The piston ring has a slide surface (10) formed on a ring edge zone (11,12). The edge zone has a worked modification (5) acting with a sensor to generate ring wear information. The modification is located in an edge section of the edge zone on the upper and/or lower edge (15a,b) of the slide…",
  "path": "/patents/1098405",
  "publishedAt": "2003-02-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B77/08",
    "WAERTSILAE NSD SCHWEIZ AG [CH]"
  ],
  "textContent": "The piston ring has a slide surface (10) formed on a ring edge zone (11,12). The edge zone has a worked modification (5) acting with a sensor to generate ring wear information. The modification is located in an edge section of the edge zone on the upper and/or lower edge (15a,b) of the slide surface, with the width of the edge section being less than 20% of the width of the slide surface. The modification is formed by a groove with a reference surface and a flank at right angles to it. The modification acts with a sensor (4) to generate a signal (45), which is supplied to an electronic evaluator to determine the wear on the piston ring.",
  "title": "Piston ring"
}