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U.S. Department of Energy
Office of Scientific and Technical Information

Rod centralizer

Patent ·
OSTI ID:5383686
This patent describes a well tool. It includes a pump rod and a centralizer having a single piece cylindrical body rigidly mounted on the rod, an upper pair of ribs integral with an upper portion of the body and extending outwardly therefrom in opposite directions, and a lower pair of ribs integral with a lower portion of the body and extending outwardly therefrom in opposite directions. The lower pair of ribs being displaced on the body from the upper pair of ribs ninety degrees about the central longitudinal axis of the rod, the body having a circumferential intermediate portion integral with the upper and lower portions between the top ends of the lower ribs and the bottom ends of the upper pair of ribs, the intermediate portion of the body being of lower mechanical strength than the portions thereof provided with the ribs.
Assignee:
McClung-Sable Partnership, Dallas, TX (USA)
Patent Number(s):
US 4997039; A
Application Number:
PPN: US 7-505369
OSTI ID:
5383686
Country of Publication:
United States
Language:
English

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