COMPOSITE CONNECTING ELEMENT WITH AN INTEGRAL INNER THREAD Russian patent published in 2008 - IPC B29C70/08 B32B5/02 B29D1/00 

FIELD: he invention refers to composite connecting elements with inner thread and may be used in machine building, mining, chemistry and other fields of industry for connecting the elements of constructions.

SUBSTANCE: the connecting element consists of bounded coaxial layers of reinforcing fibrous woven material with elements-formers of the profile of the thread. The material of the indicated layers has surface density increasing layer-by-layer from the inner layer to the external layer. The surface density of the inner layer is no more than 150 g/linear m. The elements-formers of the profile of the thread are fulfilled out of fibrous material in the shape of fibers or plaits uninterrupted along the length of the thread. The indicated elements are located in layers in an alternation order between them. The fibers and the plaits are bounded between themselves and with the indicated layers by a common binding. At that in each layer the fibers or the plaits are placed strictly between the opposite lying lateral sides of the profile of the thread.

EFFECT: increases reliability of the connecting element due to increase of durability on shift at axial loads of its thread.

11 cl, 2 dwg