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US 2025/0043632 A1Published application
Ladder comprising at least one rail and a plurality of rungs
OwnerAmine El Boudali Aissa ZINAIinventor
Life of this patent
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Abstract
The present invention relates to a ladder (10) comprising at least one rail (11) and a plurality of rungs (12) integral with said at least one rail (11). Said ladder is characterised in that said at least one rail (11) comprises at least two stiffening members (14) arranged to receive a filler material, said at least one rail (11) being rigid when the stiffening members (14) contain said filler material and the rail (11) being flexible when the stiffening members (14) do not contain said filler material.
Claims16
A ladder comprising:
- at least one rail;
- and
- a plurality of rungs integral with said at least one rail,
- wherein the at least one rail comprises at least two stiffening members arranged to receive a filler material, the at least one rail being rigid when the stiffening members contain said filler material, and the at least one rail being flexible when the stiffening members do not contain said filler material.
1 more element
Dependencies are inferred from the claim text.