Means for sealing fittings and nozzle assemblies at extremely high fluid pressures

{
  "publication_number": "US3851899A",
  "country": "US",
  "kind": "A",
  "title": "Means for sealing fittings and nozzle assemblies at extremely high fluid pressures",
  "abstract": "Means for sealing joints subjected to extremely high fluid pressures in the order of seventy thousand pounds per square inch wherein an elastic member is provided which is disposed between and initially subjected to moderate mechanical pressure by the components of the joint to be sealed and subsequently subected to extremely high fluid pressure whereby the elastic member is deformed between the components of the joint so as to seal the joint against leakage.",
  "claims": [
    "1. In a high pressure fitting, the combination including a pair of tubular elements each having a body defining a fluid passageway, said bodies having spaced confronting surfaces, an annular elastic sealing member disposed between and engageable with said confronting surfaces having at least an inside portion exposed to said fluid passageways, and means for mechanically joining said bodies together forming a joint which allows high pressure fluid leakage between the spaced confronting surfaces of said bodies to the joint between the joining means and the tubular elements without the sealing member whereby said confronting surfaces engage said sealing member with a moderate compression comparable to a finger tightening of a threaded joint between the tubular elements and joining means, and said tubular elements, sealing member and joining means define a space between the spaced confronting surfaces of the tubular elements deforming the sealing member adjacent its outer periphery towards the joint between the joining means and the tubular elements upon application of a high fluid pressure from about 10,000 to in the order of 70,000 pounds per square inch inside the tubular elements to produce a fluid tight seal of the joint.",
    "2. A high pressure fitting according to claim 1, wherein said sealing member is in the form of an O-ring.",
    "3. A high pressure fitting according to claim 1, wherein an end portion of one of said tubular elements defines a semi-toroidal groove communicating with said passageways, and said sealing member is in the form of an O-ring having a portion thereof disposed in said groove."
  ],
  "cpc": [
    "H10P 95/00",
    "F16L 17/06",
    "H10W 74/40"
  ],
  "assignees": [
    "FRANZ N"
  ],
  "filing_date": "1972-08-28",
  "publication_date": "1974-12-03",
  "grant_date": "1974-12-03",
  "priority_date": "1971-07-14",
  "application_number": "US-28397172-A",
  "family_id": "26859738",
  "citations": [
    "US2493996A",
    "US2525799A",
    "US3372948A",
    "US3567258A",
    "US3591208A"
  ]
}