发明名称 DEPTH MEASURING DEVICE WITH WEAR RESISTANT GUIDE MEANS
摘要 <p>A cable length measuring device, comprising guide rollers for maintaining the cable in a straight line along a given segment of a line, and two encoding wheels disposed tangentially to the straight segment cable; additional guides, the ends of which bearing against the cable is made of a wear resistant material, are provided between the guide rollers and the tangential wheel/cable contact area. <IMAGE></p>
申请公布号 AU637008(B2) 申请公布日期 1993.05.13
申请号 AU19910085654 申请日期 1991.10.08
申请人 SCHLUMBERGER TECHNOLOGY B.V. 发明人 NEAL COOPER
分类号 B66B7/06;B66B15/06;E21B45/00;E21B47/04;G01B5/04 主分类号 B66B7/06
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