Hose clamp

Details Hose clamp Hose clamp

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 33/025 (2006.01) F16L 33/02 (2006.01) F16L 33/035 (2006.01)

Patent

CA 2440170

For obtaining a hose clamp which has a continuously smooth inner surface free of gaps and which requires an as short as possible length of band material, the inner band end portion 11 is provided with a tongue 17 the length of which is approximately half the amount by which the hose clamp is narrowed during tightening. During the first half of the tightening movement, the tongue 17 is guided transversely to the band longitudinal direction by a projection 23 which engages a slot 24 provided in the outer band portion 12. The slot 24 at its end is continued by a window 20 which starts at a step, and the tongue 17, during the second half of the tightening movement, passes through the window which then takes over the guidance of the tongue 17.

L'invention a pour objet la réalisation d'un collier de serrage de tuyau ayant une surface interne continuellement lisse et dépourvue d'interstices, et requérant une bande de matière de longueur minimale. A cet effet, la section d'extrémité de bande interne (11) présente une languette (17) dont la longueur vaut approximativement la moitié de la mesure avec laquelle le collier de serrage est rétréci lors du serrage. La languette (17) est guidée sur la première moitié du mouvement de serrage, transversalement à la direction longitudinale de la bande, par une partie en saillie (23) s'engageant dans une fente (24) pratiquée dans la section externe de bande (12). La fente (24) débouche à son extrémité sur une ouverture (20) amorcée par un cran et traversée par la languette (17) sur la seconde moitié du mouvement de serrage, ladite ouverture prenant alors en charge le guidage de la languette (17).

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