公开(公告)号：USD827861S1

公开(公告)日：2018-09-04

申请号：US29605356

申请日：2017-05-25

申请人： Philip F. Lanzafame

设计人： Philip F. Lanzafame

公开(公告)号：US09834989B2

公开(公告)日：2017-12-05

申请号：US15197272

申请日：2016-06-29

申请人： Philip F. Lanzafame

发明人： Philip F. Lanzafame

IPC分类号： E06C7/42 ,  E06C7/44 ,  E06C7/46

CPC分类号： E06C7/426 ,  E06C7/44 ,  E06C7/46

摘要： Improvements to the leg extension of an adjustable ladder leveler and, more generally, improvements to ladder legs. A shoe with a claw that folds to be parallel to the ladder leg and then slides upward with respect to the leg thereby becoming locked into position so that it cannot move away from being parallel so long as weight is applied on the ladder. If the shoe is on an extension, as the shoe slides up, it engages a safety bar that prevents release of the extension.