发明名称 Construction apparatus
摘要 The invention relates to a construction apparatus comprising a mast, a slide guided in a longitudinally displaceable manner on a front side of the mast, at least one drive chain for the slide arranged longitudinally to the mast and at least one drive pinion supported on the slide in a rotatable and drivable manner, which is engaged with the drive chain. Provision is made for the drive chain and the drive pinion to be arranged in front of the front side of the mast.
申请公布号 US2006124330(A1) 申请公布日期 2006.06.15
申请号 US20050297325 申请日期 2005.12.09
申请人 STOETZER ERWIN 发明人 STOETZER ERWIN
分类号 E21B7/00 主分类号 E21B7/00
代理机构 代理人
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