Actionneur lineaire a action multiple

F - Mech Eng,Light,Heat,Weapons – 02 – K

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F02K 1/76 (2006.01) F16H 25/20 (2006.01)

Patent

CA 2690907

The present invention relates to a multiple-acting linear actuator (100) intended to drive at least two elements capable of moving relative to a fixed element comprising a plurality of rod-forming concentric tubular bodies (103, 102, 104) engaged successively one inside the next via external and/or internal screw threads (105, 106, 107, 108), characterized in that one of the bodies is connected to rotational-drive means (109), the other bodies then together forming an internal and/or external transmission train, and in that said bodies are associated with selective lock-up means whereas the outermost bodies of the internal and/or external transmission trains are permanently prevented from rotating.

La présente invention se rapporte à un actionneur (100) linéaire à action multiple destiné à l'entraînement d'au moins deux éléments mobiles relativement à un élément fixe comprenant une pluralité de corps tubulaires concentriques (103, 102, 104) formant tiges et engagés successivement les uns avec les autres par le biais de filetages externes et/ou internes (105, 106, 107, 108), caractérisé en ce que l'un des corps est relié à des moyens d'entraînement en rotation (109), les autres corps formant alors ensemble une chaîne de transmission interne et/ou externe et en ce que lesdits corps sont associés à des moyens de blocage sélectifs tandis que les corps les plus extrêmes des chaînes de transmission interner et/ou externe sont bloqués en rotation de manière permanente.

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