发明名称 Method and apparatus for replacing bearings
摘要 A method and apparatus are provided for replacing the bearing between the sampson post and the walking beam of an oil well pump. The walking beam and the pitman arms are securely fastened together to prevent relative movement therebetween. The head portion is adjustably restrained against the force of the counterweight. The walking beam is allowed to pivot on the connection between the walking beam and the pitman arms so that the walking beam moves away from the sampson post so that the bearing may be replaced.
申请公布号 US4525914(A) 申请公布日期 1985.07.02
申请号 US19830491513 申请日期 1983.05.04
申请人 MARATHON OIL COMPANY 发明人 BRYAN, LARRY E.;GROVE, RICHARD W.;PRIMUS, WILLIAM F.
分类号 B25B27/06;F04B47/02 主分类号 B25B27/06
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