Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Abstract This invention comprises a U shaped bar that is affixed to the edge of a roof and extends over the gutter so providing a permanent, stable access point for locating the top of an extension ladder prior to being climbed. This invention restrains the top of a ladder and resists sideways and downwards movements of the ladder enhancing ladder safety, - -'.'. *77 < \" 7 7 "7 Figure 4
Abstract This invention comprises a U shaped bar that is affixed to the edge of a roof and extends over the gutter so providing a permanent, stable access point for locating the top of an extension ladder prior to being climbed. This invention restrains the top of a ladder and resists sideways and downwards movements of the ladder enhancing ladder safety, - -'.'. *77 < \" 7 7 "7 Figure 4
Ladder Locator
MARSHALL JOHN (Autor:in)
05.01.2017
Patent
Elektronische Ressource
Englisch
IPC:
E06C
LADDERS
,
Leitern
Online Contents | 1995
British Library Online Contents | 2004