One-piece core plug
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United States of America Patent
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Jun 29, 1999
Grant Date -
N/A
app pub date -
Aug 8, 1997
filing date -
Aug 8, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A core plug includes a tube formed from a light-weight material, such as woven carbon fibers, inserted into and connected to a steel rib assembly. The rib assembly includes a series of ribs surrounding the tube, where each rib includes a beam parallel to the tube and columns connecting the beams to the tube. The tube can extend the complete length of the rib assembly or the rib assembly can extend beyond the end of the tube. A high molecular weight journal is inserted in the outer end of the tube.
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