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A platform for research: civil engineering, architecture and urbanism
Ladder With Independently Collapsible Ladder Portions and a Seat
A ladder with independently collapsible ladder portions, includes a first ladder portion and a second ladder portion attached to the first ladder portion and rotatable away from the first ladder portion. The first ladder portion and second ladder portion each have multiple ladder portion segments situated one adjacent another, each ladder portion segment, in an extended position, having a top surface higher than a top surface of its adjacent segment and a bottom surface lower than the top surface of its adjacent segment. The ladder is configured to be usable as a ladder in a stable manner in a first position in which both the first and second ladder portions are extended and in a second position in which one of the first and second ladder portions is extended and another of the first and second ladder portions is at least partially retracted, the first and second positions being stable.
Ladder With Independently Collapsible Ladder Portions and a Seat
A ladder with independently collapsible ladder portions, includes a first ladder portion and a second ladder portion attached to the first ladder portion and rotatable away from the first ladder portion. The first ladder portion and second ladder portion each have multiple ladder portion segments situated one adjacent another, each ladder portion segment, in an extended position, having a top surface higher than a top surface of its adjacent segment and a bottom surface lower than the top surface of its adjacent segment. The ladder is configured to be usable as a ladder in a stable manner in a first position in which both the first and second ladder portions are extended and in a second position in which one of the first and second ladder portions is extended and another of the first and second ladder portions is at least partially retracted, the first and second positions being stable.
Ladder With Independently Collapsible Ladder Portions and a Seat
ZAIFMAN YOSEF (author)
2022-03-31
Patent
Electronic Resource
English