Piston rod manufacturing method

{
  "publication_number": "US9873165B2",
  "country": "US",
  "kind": "B2",
  "title": "Piston rod manufacturing method",
  "abstract": "A piston rod manufacturing method of manufacturing a piston rod by joining a solid rod main body and a solid rod head includes a first step of joining respective end surfaces of the rod main body and the rod head by friction welding; and a second step of performing boring process on an axial center portion from the rod head side so as to penetrate through a joining face between the rod main body and the rod head.",
  "claims": [
    "1. A piston rod manufacturing method of manufacturing a piston rod by joining a solid rod main body and a rod head having an annular clevis connected to a load and a solid body portion, comprising: a first step of joining an end surface of the rod main body and an end surface of the body portion of the rod head at a joining face by friction welding; and a second step of performing a boring process on an axial center portion from the rod head side so as to form a hole that penetrates from the rod head side through the clevis and the joining face and into the rod main body; wherein the second step is performed after the first step.",
    "2. The piston rod manufacturing method according to claim 1, further comprising a third step of sealing at least one of respective holes formed in the clevis and in the body portion in the second step with a sealing member.",
    "3. The piston rod manufacturing method according to claim 1, further comprising a step of performing a quality inspection by means of a nondestructive test on a friction-welded portion between the rod main body and the rod head after the first step and before the second step."
  ],
  "cpc": [
    "B23K 20/12",
    "B23K 20/129",
    "B23K 2101/003",
    "B23K 2201/003",
    "B23K 31/125",
    "B23P 15/10",
    "F15B 15/1457",
    "F16C 2226/36",
    "F16C 7/023",
    "F16J 7/00"
  ],
  "assignees": [
    "KYB-YS CO LTD"
  ],
  "filing_date": "2014-08-11",
  "publication_date": "2018-01-23",
  "grant_date": "2018-01-23",
  "priority_date": "2013-08-26",
  "application_number": "US-201414914006-A",
  "family_id": "52586331",
  "citations": [
    "JP2010194711A",
    "JP2011056531A",
    "US2010163601A1",
    "US2010213245A1",
    "US2012160899A1",
    "US3399801A"
  ]
}