发明名称 Roller guide for oil-well pump
摘要 A guide for guiding a pump-rod in a well-head consisting of a housing capable of being held between a well-head tee and a stuffing box comprising an enclosure having two pairs of transversely rotatable rollers positioned substantially at right angles to each other, each roller of each pair being offset from the center line of the pump-rod such that the pump-rod will pass between both sets of rollers so that it will be guided during operation in a reciprocating path.
申请公布号 US4415026(A) 申请公布日期 1983.11.15
申请号 US19810227316 申请日期 1981.01.22
申请人 REZEWSKI, JOE;BERNES, WAYNE 发明人 REZEWSKI, JOE;BERNES, WAYNE
分类号 E21B33/068;E21B34/02;F04B53/14;F04B53/16;(IPC1-7):E21B33/03 主分类号 E21B33/068
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