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Pub. No.:    WO/1981/000746    International Application No.:    PCT/SU1980/000153
Publication Date: 19.03.1981 International Filing Date: 01.09.1980
F16L 11/08 (2006.01)
Priority Data:
2780068 12.09.1979 SU
Abstract: front page image
(EN)A hose comprising an internal supporting tube (1) made of an elastic material and spirally winded around with a profiled band (2). The said band (2) has in its cross-section a profile which is made of two quadrangular flanges (3) and (4) conjugating in steps with each other and each a height equal to half height of the profile. The neighbouring loops of the band (2) are partially overlapping each other so that the upper flange (3) of one loop is placed on the lower flange (4) of the other, whereas the butt-ends of the flanges (3) and (4) are facing each other The reinforcing carcass constituted by the band (2) is covered with an interlayer (5) made of an elastic material. Over the said interlayer (5) is laid at least one pair of reinforcing layers (6) and (7) constituted by families of interparallel reinforcing cords (8) and (9) wound in opposite directions at angles over the range of 0 to 20 to the axis of the hose. Over the pair of reinforcing layers (8) and (9) is placed an external protecting envelope (10) made of an elastic material. A method of making a modification of the hose, where it has an interlayer (5) with a spiral thickening (15), provides for coating the internal supporting tube (1) with the profiled band (2) preliminarily bent into a spiral. The said band (2) is then fixed to the supporting tube (1) and the supporting tube (1) is extended along its axis. The reinforcing carcass, constituted by the band (2), is then covered with the interlayer (5) made of an elastic material, the latter being fixed to the band (2). Finally the reinforcing layers (6) and (7) are wound, the external protecting envelope (10) is laid and the tensile force is released from the supporting tube (1).
(FR)Un tuyau comprend un tube support interne (1) en materiau elastique et enroule en spirale avec une bande profilee (2). Cette bande (2) possede une section dont le profil se compose de deux brides quadrangulaires (3 et 4) associees en escalier l"une a l"autre et ayant chacune une hauteur egale a la moitie de la hauteur du profil. Les boucles avoisinantes de la bande (2) se chevauchent entre elles de maniere telle que la bride superieure (3) d"une boucle soit placee sur la bride inferieure (4) de l"autre, tandis que les extremites en bout a bout des brides (3 et 4) sont en vis a vis. La carcasse de renforcement constituee par la bande (2) est recouverte d"une couche intermediaire (5) en materiau elastique. Sur cette couche intermediaire (5), est deposee au moins une paire de couches de renforcement (6 et 7) constituees par des familles de cordes de renforcement paralleles entre elles (8 et 9) enroulees en directions opposees avec des angles de 0 a 20 par rapport a l"axe du tuyau. La paire de couches de renforcement (8 et 9) est recouverte d"une enveloppe de protection externe (10) en materiau elastique. Un procede de modification du tuyau, qui possede une couche intermediaire (5) avec un epaississement en spirale (15), consiste a enrober le tube de support interne (1) d"une bande profilee (2) repliee au prealable en forme de spirale. Cette bande (2) est ensuite fixee au tube de support (1), qui est allonge suivant son axe longitudinal. La carcasse de renforcement constituee par la bande (2) est alors recouverte de la couche intermediaire (5) en materiau elastique, cette couche intermediaire etant fixee a la bande (2). Finalement les couches de renforcement (6 et 7) sont enroulees, l"enveloppe de protection externe (10) est placee et la force de tension exercee sur le tube support (1) est relachee.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)