Pipe joints or couplings – Particular interface – Tapered
Patent
1998-06-16
2000-09-19
Nicholson, Eric K.
Pipe joints or couplings
Particular interface
Tapered
285331, 285390, 285334, F16L 2500
Patent
active
061200670
ABSTRACT:
A connector for connecting large tubes of the type used in oil well tubing, casing and the like, without resorting to welding, to form a pipe string for use in drilling. The connector comprises a pin and box threaded connection having guiding surfaces integral with the pin and box members to facilitate the threaded connection of large tubes. The connection is designed so that large tubes, for example tubes comprising an external diameter of two or more feet, may be joined by threaded connection facilitated by the integral guiding surfaces of the pin and box threaded members. The integral guiding surfaces allow large tubes, which are otherwise too cumbersome to position and manipulate for threaded connection to be practical, to be quickly and safely connected by threaded engagement of the pin and box members without the use of a weld between the tubes.
REFERENCES:
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patent: 1637628 (1927-08-01), Weisgerber
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patent: 5507538 (1996-04-01), Phillips
patent: 5810401 (1998-09-01), Mosing
Mosing Donald J.
Sipos David L.
Frank's Casing Crew and Rental Tools Inc.
Nicholson Eric K.
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