发明名称 DEVICE FOR CLOSING AN OPENING PARTICULARLY A MAN HOLE
摘要 The manhole closing device comprises a frame (4) and a cover (6) articulated to the frame around a first axis (X-X) by means of a hinge (14). There is a locking means (16) which holds the cover open in a first position and an unlocked second position where the cover can be pivoted around the axis. The hinge is designed so that the cover while resting on the frame can pivot around a second horizontal axis (Y-Y).
申请公布号 ZA200410127(B) 申请公布日期 2005.12.28
申请号 ZA20040010127 申请日期 2004.12.15
申请人 SAINT-GOBAIN PAM 发明人 JEAN-CLAUDE HAUER;JEAN-PAUL PIETRZAK
分类号 E02D;E02D29/12;E02D29/14;E05D;E05D1/06;E05D3/02;E05D11/10;G11B33/04 主分类号 E02D
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