Patent ID: 8387330
Filing Date: 2013-03-05
Classification: B23B,B27J,B27M,E04B,Y10T

Abstract:
1. A system for supporting a framework, the system comprising bar-elements joinable to form a truss, and connecting elements insertable between said bar-elements at all junctures where two or more bar-elements, whose longitudinal axes are not coaxial to each other, are joined, wherein a) each of said bar-elements comprises at least a portion of a material selected from high-growing plants comprising deciduous trees, coniferous trees, palm trees, giant grasses and bamboo plants, and b) each of said connecting elements comprises a selected rigid, regenerative material comprising raw material built up by plants using photosynthesis, including wood; wherein c) at least one end of a bar-element, a connecting element to be mounted to said bar-element, and at least one end of a further bar-element to be connected to said connecting element, are provided with surfaces configured as geometrical bodies at least in selected areas, d) such that at a joint between at least one end of a selected one of said bar-elements and said connecting element to be mounted to said selected bar-element, or the further bar-element, each exhibits at least in a selected area a surface which extends along a surface generated by a selected one of a cylinder, a cone, a prism and a pyramid, as well as at least in another selected area a surface configured as a selected one of a hollow cylinder, a hollow cone, a hollow prism and a hollow pyramid, e) whereby multiple ones of said bar-elements are connected to one connecting element with two or more of said bar-elements having their longitudinal axes not coaxial to each other, and whereby said connecting element comprises at its surface multiple connecting structures in the shape of annular recesses disposed in a continuous surface, whereby each of said recesses surrounds a core which ends in a front side flush with an area surrounding said recess, the annular recess having two concentric bounding surfaces for the connection of each bar-element, which bounding surfaces permit assembly by plugging one bar-element into the annular recess of each connecting structure with two pairs of closely adjoining surfaces complementary to each other and connected together with glue in pairs.