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US 4,727,696 AGranted
Stable structure consisting of tubular components and posttensioned cables or other tensory elements
OwnerAmerico A. Henriques da Trindadeinventor
Life of this patent
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Abstract
A stable structure consisting of tubular components and supporting cables or other tensory elements, where the supporting cables, used in pairs, are introduced via pairs of perforations which are positioned excentrically at the respective ends of two predefined chords of a section of the tubular component, so that the tensioning of the cables transforms what is initially an unstable structure into a completely stable one whose form is dependent upon the relative lengths of the two cables in each pair of cables.
Claims15
A stable support structure comprising:
- a plurality of adjacent conformable tubular components, each of said tubular components having at least two pairs of perforations formed in the periphery thereof at predetermined intervals longitudinally of and according to the length of said tubular components;
- the perforations of one of said at least two pairs being located at respective ends of a first chord defined by a specified cross section of one of said tubular components, wherein said first chord diametrically opposes a second similar chord defined by the perforations of the other of said at least two pairs in another specified cross section of the same tubular component;
- and
- tensory means, threaded through said pairs of perforations of adjacent tubular components, for forming said stable support structure whose static form is determined by the relative lengths of said tensory means and by the relative lengths of the diametrically opposed chords.
1 more element
A stable support structure comprising:
- a plurality of adjacent conformable tubular components;
- a plurality of inner sections insertable within said tubular components to prevent water from entering or passing through said tubular components and allowing for the construction of a completely watertight support structure;
- a plurality of tubular support components surrounding the outer periphery of selected portions of said plurality of tubular components, each of said tubular support components having at least two pairs of perforations formed in the periphery thereof;
- the perforations of one of said at least two pairs being located at respective ends of a first chord defined by a specified cross section of one of said tubular support components, wherein said first chord diametrically opposes a second similar chord defined by the perforations of the other of said at least two pairs in another specified cross section of the same tubular support component;
- and
- tensory means, threaded through said pairs of perforations of adjacent tubular components, for forming a stable support structure whose static form is determined by the relative lengths of said tensory means and by the relative lengths of said diametrically opposed chords.
3 more elements
Dependencies are inferred from the claim text.