发明名称 GRATING
摘要 A cover grating for a drainage channel or a similarly hollow body which can be installed in the ground is presented, wherein the cover grating is produced in a single piece and more particularly from a sheet metal strip, comprising at least two longitudinal webs extending on the underside of the cover grating and inlet slots formed in the cover grating between these longitudinal webs and comprising transverse webs resulting from the slot forming operation and extending on the lower side of the cover grating wherein the transverse webs are provided at each of their end regions with at least one receiving projection which at least partially engages in to a respective complementarily formed receiving slot in the longitudinal web.
申请公布号 US2010008719(A1) 申请公布日期 2010.01.14
申请号 US20070447962 申请日期 2007.03.05
申请人 RATHMANN AXEL;AHLMANN HANS-JULIUS 发明人 RATHMANN AXEL;AHLMANN HANS-JULIUS
分类号 E01F5/00 主分类号 E01F5/00
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