发明名称 RACK BAR HAULAGE SYSTEM WITH AN IMPROVED RACKBAR TO LINE PAN CONNECTION
摘要 A disclosed rack bar system utilizes a forged or cast clog with integral lugs that accept a retainer plate. The plain rack bar pins cannot pass fully through the clog and are held in place by a plate retainer. The retainer is simply secured by a spring pin, or is held in place by gravity.
申请公布号 US2011181095(A1) 申请公布日期 2011.07.28
申请号 US20100692174 申请日期 2010.01.22
申请人 JOY MM DELAWARE, INC. 发明人 HILL NIGEL;POWELL GORDON
分类号 E21C29/02;E21C35/12 主分类号 E21C29/02
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