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US 5,448,862 AGranted
Prefabricated component for building staircases
OwnerAngelo Candiracciinventor
Life of this patent
Estimating the term…
Abstract
The prefabricated component for building staircases comprises a supporting element made of foamed plastic material which extends longitudinally and is cut in the shape of steps along one of its upper surfaces. The supporting element is provided with a plurality of longitudinal holes which are meant for the insertion of respective metallic reinforcement frames and are suitable to be filled with a concrete casting when installed, to provide respective beams for stiffening the supporting element.
Claims20
Prefabricated component for building staircases comprising;
- a supporting element made of foamed plastic material and having a longitudinal extension, said supporting element having an upper surface and a lower surface;
- a plurality of longitudinal openings formed in said lower surface of said supporting element and extending parallel to said longitudinal extension of said supporting element;
- a plurality of steps defined by said supporting element at said upper surface thereof and each extending transversely with respect to said longitudinal openings;
- a plurality of mutually parallel longitudinal holes extending through said supporting element parallel to said longitudinal openings, and;
- a plurality of linear slots formed longitudinally in said upper surface and extending parallel to said longitudinal holes and parallel to said longitudinal openings, each one of said slots communicating with at least one of said plurality of mutually parallel longitudinal holes.
2 more elements
Prefabricated component for building staircases comprising;
- a supporting element made of foamed plastic material and having a longitudinal extension, said supporting element having an upper surface and a lower surface;
- a plurality of longitudinal openings formed in said lower surface of said supporting element and extending parallel to said longitudinal extension of said supporting element;
- a plurality of steps defined by said supporting element at said upper surface thereof and each extending transversely with respect to said longitudinal openings;
- a plurality of mutually parallel longitudinal holes extending through said supporting element parallel to said longitudinal openings;
- a plurality of linear slots formed longitudinally in said upper surface and extending parallel to said longitudinal holes and parallel to said longitudinal openings, each one of said slots communicating with at least one of said plurality of mutually parallel longitudinal holes
- a plurality of reinforcement beams, at least one of said reinforcement beams being inserted into each of said plurality of mutually parallel longitudinal holes, and;
- at least two electrowelded metallic nets, at least one of said electrowelded metallic nets extending stepwise along said upper surface of said supporting element, another of said nets extending along said lower surface of said supporting element parallel to said plurality of longitudinal grooves.
4 more elements
Dependencies are inferred from the claim text.