GB799028A - Improvements in or relating to tapering pin-and-box type threaded couplings - Google Patents

Improvements in or relating to tapering pin-and-box type threaded couplings

Info

Publication number
GB799028A
GB799028A GB32954/56A GB3295456A GB799028A GB 799028 A GB799028 A GB 799028A GB 32954/56 A GB32954/56 A GB 32954/56A GB 3295456 A GB3295456 A GB 3295456A GB 799028 A GB799028 A GB 799028A
Authority
GB
United Kingdom
Prior art keywords
screw
pin
flanks
box
screwthread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB32954/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB799028A publication Critical patent/GB799028A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

799,028. Rod, &c. couplings. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Oct. 29, 1956 [Oct. 31, 1955], No. 32954/56. Addition to 786,652. Class 99(1). [Also in Group XXIV] In the pin-and-box coupling described in the parent Specification in which the pin 2 and the box 4 are provided with tapered screw-threads 7, 8 such that, when the coupling has been tightened up, the outer flanks of the screwthread 7 and the inner flanks of the screwthread 8 are more heavily loaded than the other flanks, the screw-thread 7 has a pitch greater than that of the screw-thread 8 and the difference in pitch decreases from the middle of the screw-threads towards the ends thereof. The outer and inner flanks are defined as those directed respectively away from and towards a plane M normal to the axis 9, of the coupling. As shown, the pin 2 is provided with a shoulder 5 which abuts a shoulder 6 formed on the box 4. The generatrix of the crests of the screwthread 7 may diverge with respect to the generatrix of the roots from the ends towards the middle of the screw-thread.
GB32954/56A 1955-10-31 1956-10-29 Improvements in or relating to tapering pin-and-box type threaded couplings Expired GB799028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL799028X 1955-10-31

Publications (1)

Publication Number Publication Date
GB799028A true GB799028A (en) 1958-07-30

Family

ID=19834592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32954/56A Expired GB799028A (en) 1955-10-31 1956-10-29 Improvements in or relating to tapering pin-and-box type threaded couplings

Country Status (1)

Country Link
GB (1) GB799028A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146086A (en) * 1983-09-06 1985-04-11 Hunting Oilfield Services Threaded pipe connectors
GB2146084A (en) * 1983-08-31 1985-04-11 Hunting Oilfield Services Pipe connectors
US4673201A (en) * 1983-09-01 1987-06-16 Hunting Oilfield Services (Uk) Limited Pipe connector
JP2018062998A (en) * 2016-10-13 2018-04-19 フタバ産業株式会社 Piping fastening structure and piping

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146084A (en) * 1983-08-31 1985-04-11 Hunting Oilfield Services Pipe connectors
US4673201A (en) * 1983-09-01 1987-06-16 Hunting Oilfield Services (Uk) Limited Pipe connector
GB2146086A (en) * 1983-09-06 1985-04-11 Hunting Oilfield Services Threaded pipe connectors
JP2018062998A (en) * 2016-10-13 2018-04-19 フタバ産業株式会社 Piping fastening structure and piping

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