发明名称 DEPTH MEASURING DEVICE WITH WEAR RESISTENT GUIDE MEANS
摘要 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>
申请公布号 ZA9108039(B) 申请公布日期 1992.06.24
申请号 ZA19910008039 申请日期 1991.10.08
申请人 PRAD RESEARCH AND DEVELOPMENT N.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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