发明名称 LOCKING DEVICE FOR COVERINGS FOR MANHOLES AND OTHER GROUND OPENINGS
摘要 <p>The locking device (1) has arms (3, 4) which are inserted in recesses (16) in the cover (10), in the course of which they sustain elastic deformation and thereby form a frictional connection with the cover (10). The arms (3, 4) project with their free end under an inner flange (9) of the frame (8) and form there a positive-locking connection between the arms (3, 4) and the inner flange (9). This results in a simple but effective connection between the cover (10) and the frame (8) without the arms (3, 4) or the recesses (16) having to be mechanically worked. …<IMAGE>… </p>
申请公布号 AU2590488(A) 申请公布日期 1989.06.01
申请号 AU19880025904 申请日期 1988.11.24
申请人 VON ROLL A.G. 发明人 HANSRUEDI SPIESS;FRANCOIS GALVANETTO
分类号 E02D29/14;E03F5/06;(IPC1-7):E05C19/00;E05B73/00 主分类号 E02D29/14
代理机构 代理人
主权项
地址