Pipes and tubular conduits – End protectors – Threaded
Patent
1990-01-10
1991-04-02
Bryant, III, James E.
Pipes and tubular conduits
End protectors
Threaded
138 96R, 138 89, 138110, B65D 5906
Patent
active
050040162
ABSTRACT:
A pipe thread protector device for protecting the threads at the end of a casing section or the like, and including an elastomeric shoe having a cavity or recess in one side thereof for receiving the threaded end of the casing, and further having an elongated generally cylindrical constriction sleeve made of braided or interwoven wire elements connected to the shoe. One end of the constriction sleeve is embedded in this shoe and the other carries a plurality of tensioning tongues. The constriction sleeve construction causes it to undergo a reduction in diameter when it is placed in tension, and an enlargement in diameter when placed in compression. A hook is secured to the center of the elastomeric shoe and projects therefrom to permit the entire thread protector device to be removed from a casing section upon which it is used to protect the thread, and then slid down a wire extending from the location upwardly in a derrick to which the pipe has been lifted to, to a location on the rig floor where it can be utilized on another section of casing.
REFERENCES:
patent: 2189987 (1940-02-01), Kellems
patent: 2215829 (1940-09-01), Evans
patent: 4398566 (1983-08-01), Janzen
patent: 4415005 (1983-11-01), Janzen
patent: 4425945 (1984-01-01), McDonald
patent: 4531719 (1985-07-01), Hoppie et al.
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