Adjustable winged centering tool for use in pipes with...

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 17/10 (2006.01)

Patent

CA 2615767

The present invention relates to an adjustable centering tool (1) for use in pipes of varying inner diameter, said centering tool (1) being provided with a number of identical and steplessly adjustable, radially protruding wings (2) having guiding lugs (2') and chamfered end faces (2"). The invention is characterized in that the wings (2), having been set, are retained by an upper lock mandrel (3) with a safety pin (4) and a lower lock mandrel (5) with a safety nut (6), the outer circumference of a cylindrical tool body (7) being fitted with longitudinal grooves (8) having sloped terminations (8X) cooperating with the wing dimensions, the chamfered end faces (2") of the wings (2), and the guiding lugs (2'), respectively.

La présente invention concerne un outil de centrage ajustable (1) destiné à une utilisation dans des tuyaux de diamètre intérieur variable, ledit outil de centrage (1) étant muni d'un certain nombre d'ailettes (2) saillant radialement, identiques et ajustables en continu, munies d'oreillettes de guidage (2') et de faces d'extrémité chanfreinées (2"). L'invention est caractérisée en ce que les ailettes (2), une fois mises en place, sont retenues par un mandrin de verrouillage supérieur (3) avec une goupille de sécurité (4) et un mandrin de verrouillage inférieur (5) avec un écrou de sécurité (6), la circonférence externe d'un corps d'outil cylindrique (7) étant munie de gorges longitudinales (8) ayant des terminaisons inclinées (8X) correspondant aux dimensions des ailettes, aux faces d'extrémité chanfreinées (2") des ailettes (2), et aux oreillettes de guidage (2'), respectivement.

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