SUCKER ROD
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Dec 19, 2011
filing date -
Jun 11, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A sucker rod, including: a rod; a threaded casing disposed outside the rod; a wedge-shaped groove disposed at one end of the rod; an outer connecting screw thread close to the wedge-shaped groove and disposed outside the rod; a wedge-shaped bulge disposed at the other end of the rod; a positioning nut close to the wedge-shaped bulge and matching with the threaded casing and disposed outside the rod; an inner nut flexibly disposed outside the rod between the positioning nut and the wedge-shaped bulge; and an outer nut flexibly disposed outside the rod for cooperation with the threaded casing; a convex plate disposed inside one end of the threaded casing for cooperation with the positioning nut; and an inner connecting screw thread disposed at the other end of the threaded casing for cooperation with the outer connecting screw thread. The sucker rod has a high torsional strength and is stable.
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