Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An adjustable step ladder system including an adjustable step ladder assembly. The adjustable step ladder assembly includes a front-assembly, a rear-assembly, a top-unit, and a tray-unit in functional and structural combination. The front-assembly includes two front-legs, a plurality of rungs, and two front-feet in functional and structural combination. The rear-assembly includes two upper-legs, a center-section, two lower-legs, and two rear-feet in functional and structural combination. The tray-unit includes a tray, and two tracks in a preferred embodiment. The plurality of rungs are affixed between and to each of the front-legs such that the plurality of rungs provides a user with a secure step to climb the adjustable step ladder assembly.
An adjustable step ladder system including an adjustable step ladder assembly. The adjustable step ladder assembly includes a front-assembly, a rear-assembly, a top-unit, and a tray-unit in functional and structural combination. The front-assembly includes two front-legs, a plurality of rungs, and two front-feet in functional and structural combination. The rear-assembly includes two upper-legs, a center-section, two lower-legs, and two rear-feet in functional and structural combination. The tray-unit includes a tray, and two tracks in a preferred embodiment. The plurality of rungs are affixed between and to each of the front-legs such that the plurality of rungs provides a user with a secure step to climb the adjustable step ladder assembly.
ADJUSTABLE STEP LADDER SYSTEMS
BOLLER GREGORY (Autor:in)
19.04.2018
Patent
Elektronische Ressource
Englisch
IPC:
E06C
LADDERS
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Leitern