Dismountable cylinder for reciprocable piston machines

{
  "publication_number": "US3648572A",
  "country": "US",
  "kind": "A",
  "title": "Dismountable cylinder for reciprocable piston machines",
  "abstract": "A dismantable cylinder-cylinder head unit, which includes a cylinder tube having its outer periphery provided with a buttress thread which is engaged by a threaded ring, which latter is cast between the cylinder head and said cylinder tube while said cylinder tube has an end face in sealing engagement with a sealing surface of a radially inwardly extending collar of said threaded ring, said sealing surface being spaced from the nearest winding of said buttress thread by a section of said cylinder tube which precisely fits into a corresponding portion of said threaded ring.",
  "claims": [
    "1. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said thReaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head.",
    "2. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, said threaded ring being cast into said cylinder head and in adjoining relationship to said buttress thread.",
    "3. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, and sealing means inserted in said chamber means.",
    "4. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, the diameter of said outer peripheral surface of said section substantially equaling the core diameter of said buttress thread.",
    "5. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, said chamber means being formed by annular undercuts located at the ends of said section of said tube means which precisely fits into a correspondingly shaped section of said threaded ring.",
    "6. A unit according to claim 5, which includes an elastic sealing ring located in that undercut which is adjacent to the thread winding closest to said section of said tube means which precisely fits into a correspondingly shaped section of said threaded ring.",
    "7. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, conduit means extending from the outside of said cylinder head through said threaded ring to both said thread windings adjacent said section of said tube means which precisely fits into a correspondingly shaped section of said threaded ring and that chamber means which is closest to said buttress thread for pressing a sealing substance into said thread windings and the chamber means adjacent thereto.",
    "8. A unit according to claim 5, which includes connecting passage means provided in said threaded ring and establishing communication between said undercuts.",
    "9. A unit according to claim 8, which includes sealing material located in that undercut which is closest to said end face of said tube means.",
    "10. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, a cylinder bushing being inserted into said cylinder tube having a flanged portion engaging a corresponding recess in said cylinder tube, the outer end face of said flanged portion being flush with said end face of said tube means.",
    "11. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking With said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, said threaded ring being of a material having a heat expansion coefficient of a value between that of the cylinder head and that of the cylinder tube while being as close as possible to the heat expansion coefficient of the material making up said cylinder head.",
    "12. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, that end portion of said threaded ring which is farthest away from said cylinder tube having connected thereto a strong annular member adapted to convey the ignition pressure acting upon the cylinder head to said cylinder tube.",
    "13. A unit according to claim 12, in which said threaded ring forms a heat bridge and has its circumference provided with passages, and in which said annular member is, by means of webs, connected to the remaining portion of said threaded ring.",
    "14. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttress thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, the outer periphery of said threaded ring being provided with coaxial grooves.",
    "15. A dismantable cylinder-cylinder head unit for reciprocable piston engines, especially reciprocable piston internal combustion engines, which includes: cylinder tube means having its outer periphery provided with a buttress thread, a cylinder head, and a threaded ring interlocking with said cylinder head and mating with said buttress thread, said threaded ring having a radially inwardly extending collar comprising a sealing surface, and said tube means having an end face in sealing engagement with said sealing surface and spaced from the nearest winding of said buttrEss thread by a section of said tube means which has an outer peripheral surface precisely engaging into a correspondingly shaped section of said threaded ring, portions of said peripheral surface and the correspondingly shaped section of said threaded ring means confining with each other relatively small chamber means for aiding in establishing a seal between said cylinder and said cylinder head, said cylinder head being of a light metal alloy and said cylinder tube being of steel while said threaded ring is of a bronze alloy."
  ],
  "cpc": [
    "F02F 1/10"
  ],
  "assignees": [
    "AUGSBURG NURNBERG AG ZWEIGNIED"
  ],
  "filing_date": "1970-03-27",
  "publication_date": "1972-03-14",
  "grant_date": "1972-03-14",
  "priority_date": "1969-03-27",
  "application_number": "US-3648572D-A",
  "family_id": "5729526",
  "citations": [
    "FR1327511A",
    "US1220335A",
    "US1825769A",
    "US1951948A",
    "US2144928A",
    "US2311329A",
    "US2863439A"
  ]
}