发明名称 COMBINATION LADDERS, LADDER COMPONENTS AND METHODS OF MANUFACTURING SAME
摘要 Ladder configurations and components are provided including an outer rail assembly which is longitudinally adjustable relative to an inner rail assembly. The outer rail assembly may include a pair of spaced apart outer rails each fixedly coupled to an associated sleeve or sliding mechanism. Each sleeve is in turn slidably couple to an inner rail of the inner rail assembly. The outer rails may be positioned and oriented at an acute angle relative to the inner rails so as to provide an increased base distance between the two outer rails. Support structures are also disclosed which are coupled at multiple locations along a rail member and at least one location of a rung. Additionally, ladder hinges are disclosed including hinge components configured to effectively transmit loads from associated rails. In one embodiment the hinge may include a pinch prevention mechanism.
申请公布号 CA2508885(C) 申请公布日期 2011.01.18
申请号 CA20032508885 申请日期 2003.11.11
申请人 WING ENTERPRISES, INC. 发明人 MOSS, NEWELL RYAN;BOWERS, JACK W.;FRANCIS, DAVID
分类号 E06C1/22;E06C1/18;E06C1/32;E06C7/06;E06C7/42 主分类号 E06C1/22
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