Thread protector for use on pin end of oilfield tubulars

Pipes and tubular conduits – End protectors – Threaded

Reexamination Certificate

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Details

C294S119200

Reexamination Certificate

active

10689913

ABSTRACT:
A cylindrical ring sized to slide over the box end of an oilfield tubular having a given external diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can be made tight against the exterior surface of the oilfield tubular by a latch, accessible through a slot in the sidewall, and which becomes even tighter if the tubular attempts to escape from the band. In a first orientation, the cylindrical ring is used as a load ring. By turning the cylindrical ring upside down, the cylindrical ring is used as a thread protector for the pin end of the tubular.

REFERENCES:
patent: 1600860 (1926-09-01), Young
patent: 2073389 (1937-03-01), Engstrom
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patent: 3038502 (1962-06-01), Hauk et al.
patent: 3240232 (1966-03-01), Matherne
patent: 3485271 (1969-12-01), Halsey
patent: 3858613 (1975-01-01), Musslewhite
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patent: 5148835 (1992-09-01), Clark
patent: 5368074 (1994-11-01), Hall
patent: 5524672 (1996-06-01), Mosing et al.
patent: 5706894 (1998-01-01), Hawkins, III
patent: 5819805 (1998-10-01), Mosing et al.
patent: 2005/0082857 (2005-04-01), Latiolais et al.

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