发明名称 Handles for slips used on drilling rigs
摘要 Slips of the type used for gripping drill pipe and casing employed in the drilling of oil and gas wells are constructed with novel handles which are improved in terms of safety in use. The handles of the slips are elongated members having a hand grip loop at one end thereof and a pivot head at the other end thereof for attachment to the slip mechanism. Each handle is constructed of a body of molded or cast polyurethane having embedded therein a stranded or braided nylon core which extends throughout the length of the handle and also lies within the hand grip loop.
申请公布号 US4458934(A) 申请公布日期 1984.07.10
申请号 US19820356840 申请日期 1982.03.10
申请人 KLIEWER, LARRY D.;KLIEWER, GLENN A. 发明人 JANZEN, HARLO W.;KLIEWER, MELVIN J.
分类号 E21B19/10;(IPC1-7):A44B21/00 主分类号 E21B19/10
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