发明名称 ASSEMBLY FOR USE IN A BELTTONG
摘要 An assembly for use in a tong (2) having a housing (3) and a rotary element (16) rotatably mounted in said housing (3), comprises: (a) a belt anchor assembly (21), (b) a belt carrier assembly (31) which can be mounted on said rotary element (16), (c) a belt (32) extending between the belt anchor assembly (21) and the belt carrier assembly (31), and (d) at least one jaw (30) for facilitating gripping a pipe (8).
申请公布号 WO9006417(A1) 申请公布日期 1990.06.14
申请号 WO1989EP01436 申请日期 1989.11.27
申请人 WEATHERFORD U.S., INC.;LUCAS, BRIAN, RONALD 发明人 SCHULZE-BECKINGHAUSEN, JOERG, ERICH
分类号 E21B19/16 主分类号 E21B19/16
代理机构 代理人
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