专利名称：Cover for wall duct
发明人：Van Geel, Jacobus Antonius Peter申请号：EP92201474.1申请日：19920521公开号：EP0518404A1公开日：19921216
专利附图：
摘要：A cover for a wall duct, wherein the duct contains two parallel grooves forreceiving in each case an edge flange of the cover which is U-shaped in cross-section,wherein the edge flange is provided with a number of deformed portions located atregular mutual distances and each of which is at least embodied with a pair of lips which
are provided with a sharp edge and extend inward from the edge flange, whereby, whenthe cover is fitted onto the wall duct, electrical contact always occurs, sufficient holdingpower is provided when the cover is placed and no additional fixing or safety material,such as earth cables, is necessary.
申请人：VAN GEEL SYSTEMS B.V.
地址：Bosscheweg 149 NL-5282 WV Boxtel NL
国籍：NL
代理机构：Hoorweg, Petrus Nicolaas
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