SUCKER ROD COUPLINGS
A coupling for joining sucker rods in an oil well pump and the like, having a metal sleeve with an axially threaded bore and an exterior coating on the sleeve producing a cylindrical coupling, with the coating being an abrasive resistant thermoplastic hydrourethane polymer.
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Format: | Patent |
Sprache: | eng |
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Online-Zugang: | Volltext bestellen |
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Zusammenfassung: | A coupling for joining sucker rods in an oil well pump and the like, having a metal sleeve with an axially threaded bore and an exterior coating on the sleeve producing a cylindrical coupling, with the coating being an abrasive resistant thermoplastic hydrourethane polymer. |
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