发明名称 Double-stringer ladder-entry securing device
摘要 The ladder-entry securing device according to the invention on ladders is characterised by a double-stringer construction, wherein the width of the stringers corresponds to the distance between the ladder stringers (3). A first slight bend (P) of the securing device (1) effects a slight inclination of said securing device and ensures safe use thereof. A second severe bend serves as a handle. The securing device (1) is supported on a rung (13) by means of two fork-shaped supporting members (8, 9). In order to prevent sliding out, the upper end of each ladder stringer (3) is provided with two guide clips (10, 11). <IMAGE>
申请公布号 DE3112106(A1) 申请公布日期 1982.10.07
申请号 DE19813112106 申请日期 1981.03.27
申请人 ZENHAEUSERN, HEINRICH, URDORF, ZUERICH, CH 发明人 ZENHAEUSERN, HEINRICH, URDORF, ZUERICH, CH
分类号 E06C7/18;E06C7/48;E06C9/02;(IPC1-7):E06C7/48 主分类号 E06C7/18
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