Variable propeller for boat

B - Operations – Transporting – 63 – H

Patent

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Details

B63H 1/20 (2006.01) B63H 3/00 (2006.01) B63H 3/02 (2006.01)

Patent

CA 2139205

A plurality of blade shafts 33 spline-connected to bosses 32 a of a plurality of propeller blades 32 are rotatably carried on a propeller boss 12 parallel to an axis of the boss 12, the propeller blades 32 being rotated so as to increase a propeller-diameter according to an increase in a centrifugal force, and all the blade shafts 33 are mutually connected through a synchronizer 41 including cranks 42 integrally continuously provided on the blade shafts 33 and a single common synchronizing ring 43. With this arrangement, it is possible to always equally control opening angles of all the propeller blades despite the partial conditional change.

Plusieurs arbres à pales 33 reliés par cannelures à des moyeux 32a de plusieurs pales d'hélice 32 sont disposés de façon circulaire sur un moyeu 12 d'hélice parallèle à un axe de moyeu 12, les pales d'hélice 32 étant orientées de façon à augmenter le diamètre d'hélice en fonction de l'augmentation de la force centrifuge, et tous les arbres à pales 33 sont reliés entre eux au moyen d'un synchroniseur 41 y compris des manetons 42 incorporés en continu sur les arbres à pales 33 et une unique bague de synchronisation 43 ordinaire. Grâce à cette disposition, il est possible de toujours bien contrôler les angles d'ouverture de toutes les pales d'hélice malgré un changement partiel d'état.

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