Pipes and tubular conduits – End protectors – Threaded
Reexamination Certificate
2007-01-09
2007-01-09
Hook, James (Department: 3754)
Pipes and tubular conduits
End protectors
Threaded
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.
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Elkins Johnny Firmin
Hawkins, III Samuel P.
Latiolais, Jr. Burney J.
Lutgring Keith T.
Moody, V Braxton I.
Frank's International, Inc.
Hook James
The Matthews Firm
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