发明名称 ASSEMBLY FOR USE IN A TONG, A BELT HOLDER AND A BELT ANCHOR ASSEMBLY PROVIDED WITH SUCH A BELT HOLDER
摘要 ASSEMBLY FOR USE IN A TONG, A BELT HOLDER AND A BELT ANCHOR ASSEMBLY PROVIDED WITH SUCH A BELT HOLDER An assembly for use in a tong having a housing and a rotary element rotably mounted in said housing, comprises: a) a belt anchor assembly; b) a belt carrier assembly which can be mounted on said rotary element; c) a belt extending between the belt anchor assembly and the belt carrier assembly; and d) at least one jaw for facilitating gripping a pipe. Fig. 3
申请公布号 CA2004015(A1) 申请公布日期 1990.05.28
申请号 CA19892004015 申请日期 1989.11.28
申请人 WEATHERFORD U.S., INC. 发明人 SCHULZE-BECKINGHAUSEN, JOERG E.
分类号 E21B19/16;(IPC1-7):E21B19/16;B66C1/42 主分类号 E21B19/16
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