发明名称 Raiseable pan drag apparatus
摘要 A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and movable transversely across the body of concrete to grade the concrete. The pan drag device includes support members mounted to and extending rearwardly from the finishing unit and movable with the finishing unit and pan drag apparatus mounted to the support members for engaging the graded concrete surface to finish and seal the concrete surface. The pan drag device further includes a hydraulically actuated piston and cylinder member for raising and lowering the pan drag apparatus with respect to the concrete surface and apparatus for controlling the hydraulically actuated piston and cylinder member for raising and lowering the pan drag apparatus between an upward raised position to a downward engaging position to permit the pan drag apparatus to engage the graded concrete surface to seal and finish the concrete surface.
申请公布号 US5388927(A) 申请公布日期 1995.02.14
申请号 US19930036930 申请日期 1993.03.25
申请人 CMI CORPORATION 发明人 ULMER, EWALD R.;EBEN, LARRY G.
分类号 E01C19/42;(IPC1-7):E01C19/48 主分类号 E01C19/42
代理机构 代理人
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